Grotto Baths Brings a Social Bathhouse to Miami’s Wynwood This Summer

Rendering of Grotto Baths in Wynwood. The venue splits 5,000 square feet of indoor bathing space from a 2,500-square-foot outdoor lounge and cafe. Photo: Grotto Baths.

A 7,500-square-foot social bathhouse is about to open in one of Miami’s busiest nightlife districts, and the people behind it are not wellness founders. Grotto Baths, set to open this summer at 325 NW 28th Street in Wynwood, is the project of real estate developer Nathan Kaplan and co-founder Nick Anselmo, with an operating team that includes a former nightlife and culture director from The Standard Hotels and the co-founder of the restaurant chain Tender Greens. The venue will run a thermal circuit of ceremonial sauna, infrared sauna, steam room, thermal bath, mineral pool, and cold plunge, with no phones and no alcohol.

In a city defined by bars, clubs, and bottle service, that combination is a deliberate provocation. Grotto is not positioning itself as a spa. It is positioning itself as the thing that replaces the bar.

Key Facts

Venue: Grotto Baths, 325 NW 28th Street, Wynwood, Miami

Size: 7,500 sq ft total (5,000 sq ft indoor bathing, 2,500 sq ft outdoor lounge and cafe)

Opening: Early summer 2026 (exact date not yet confirmed)

Founders: Nathan Kaplan (real estate developer) and Nick Anselmo

Operating partners: Darryl Gibson (former Regional Director, Culture and Programming, The Standard Hotels) and Erik Oberholtzer (co-founder, Tender Greens)

Architect: Stokes Architecture + Design

Creative direction: Cohere, founded by Antoinette Marie Johnson

Artist: Emmett Moore (Miami-born), sculptural installations from reclaimed South Florida construction materials

Thermal circuit: Ceremonial sauna, infrared sauna, steam room, thermal bath, mineral pool, cold plunge

Food and beverage: Alcohol-free Sensory Bar and Cafe, farm partners French Farms and Paradise Farms (Homestead, FL)

Policy: Phone-free

Under construction since: October 2025

Company founded: November 2023

The Team Tells the Story

The founding team is the signal. Nathan Kaplan, the lead founder, comes from real estate, not wellness. That means Grotto was underwritten as a real estate play: a developer saw a site in Wynwood, modeled the returns, and decided a bathhouse pencils better than another restaurant or co-working space. The co-founder, Nick Anselmo, brings a data and consulting background, having served as a senior manager in global business intelligence analytics at Abbott before co-founding the venture in November 2023.

The operating side is where the thesis gets specific. Darryl Gibson, who joined as a partner in October 2025, spent his career building the kind of cultural programming that turned hotels into destinations. He was Regional Director of Culture and Programming at The Standard Hotels (including the Standard Spa in Miami Beach), Programming and Experience Director at Faena Miami Beach, and Director of Culture and Nightlife at André Balazs Properties, which operated the Chateau Marmont. Before any of that, he was General Manager at Bungalow 8 in New York, the early-2000s nightlife institution. His resume is a map of how American hospitality moved from nightclub to hotel lobby to wellness floor.

“When I moved to Miami, there weren’t any communal bathing places, except for hotel spas and some of the fancier gyms,” Gibson told A Hotel Life. That gap, he said, is what makes the project viable.

Erik Oberholtzer, the fourth partner, co-founded Tender Greens in Los Angeles in 2006, as Time Out Miami reported, growing it into a nationally recognized fast-casual chain before shifting into hospitality consulting. His role at Grotto is to build the food and beverage operation: a “Sensory Bar and Cafe” serving seasonal bites and adaptogenic drinks sourced from local farms, including French Farms and Paradise Farms in Homestead. The goal, per Time Out Miami, is “less juice bar and more thoughtful culinary experience.”

The indoor bathing circuit at Grotto Baths includes a mineral pool, thermal bath, and cold plunge across 5,000 square feet. Photo: Grotto Baths.

What the Space Looks Like

The 7,500-square-foot venue splits into two zones: 5,000 square feet of indoor bathing space and a 2,500-square-foot outdoor lounge and cafe. Construction began in October 2025 at 325 NW 28th Street, in the northwest quadrant of Wynwood, as development tracker Traded.co confirmed.

The design, by Stokes Architecture + Design with creative direction from Antoinette Marie Johnson’s agency Cohere, draws on Brazilian modernism: arches, zigzags, and rhythmic forms in stone, brick, and travertine. The official announcement describes the material palette as “grounded in tactile materials,” as Modern Luxury reported, meant to evoke warmth in a tropical setting, not the industrial or Scandinavian minimalism that defines most social bathhouses in the Northeast.

Miami-born artist Emmett Moore is creating sculptural installations from reclaimed materials sourced from South Florida construction sites, referencing coral rock, limestone, and mid-century breeze-block architecture. One installation at the entrance is inspired by his exhibition at the Bass Museum, also titled “The Grotto.”

The thermal circuit includes a ceremonial sauna, infrared sauna, steam room, thermal bath, mineral pool, and cold plunge. Early coverage from Miami New Times also listed aufguss rituals, breathwork sessions, and leaf ceremonies as planned programming. The venue will be phone-free throughout.

Where Grotto Fits in the Market

Grotto calls itself “Miami’s first modern social bathhouse,” and the claim holds up with a qualifier. Miami New Times noted that the announcement came weeks after the opening of Hürrem, a Turkish hammam in North Miami billed as the largest authentic hammam in the country. Miami Beach also has the long-running Russian and Turkish Baths. But neither operates the social-club, thermal-circuit model that has defined the category in New York, Toronto, and, increasingly, across the United States. In that specific format, Grotto is a first for the Miami market.

Nationally, the social bathhouse category is in the middle of a capital surge. Bathhouse, the New York operator, raised $35 million from Imaginary Ventures in May to fund an eight-city expansion, building on a business that SaunaNews reported was on pace for $120 million in annual revenue. Othership has raised roughly $20 million and plans three New York locations by 2027. Portal° Thermaculture is building a five-metro chain without outside investors. Lore Bathing Club opened in NoHo in January. Schwet is coming to Tribeca. The Altar is slated for Chelsea.

Grotto’s capital structure is different from all of them. It is developer-funded, not venture-backed. Kaplan is underwriting the project as a real estate investment, which means the financial thesis is about the asset, not about building a brand to flip. That distinction matters: it suggests that at least one developer in South Florida has concluded that a bathhouse generates enough revenue per square foot to justify a ground-up build in a high-rent district, without needing the growth narrative that venture capital requires.

The cold plunge at Grotto Baths. The thermal circuit also includes ceremonial and infrared saunas, a steam room, thermal bath, and mineral pool. Photo: Grotto Baths.

The Miami Test

Every social bathhouse that has opened in the past three years has done so in a cold-weather city. Bathhouse is in New York. Othership started in Toronto. Portal° launched in Minneapolis. The implicit pitch has always included a weather component: when it is freezing outside, a hot sauna and a cold plunge feel urgent.

Miami flips that. Average winter highs sit in the upper 70s. Summers are in the 90s with near-total humidity. The thermal contrast that drives walk-in traffic in January in Brooklyn does not exist in Wynwood. What does exist is a population that spends more per capita on going out than almost any other American city, and a cohort of younger residents who are looking for social venues that do not center on alcohol. SaunaNews has tracked this shift: wellness is moving into the social slot that bars and clubs used to own, and Grotto is a direct bet on that thesis in one of the country’s most nightlife-saturated markets.

The alcohol-free policy sharpens the bet further. In a city with one of the densest bar-per-capita counts in the United States, Grotto is wagering that the social experience of communal bathing, combined with a serious food and drink program (minus the alcohol), is enough to draw the same crowd. Gibson’s nightlife background is not incidental: he knows the customer, and he is arguing that the customer is ready for something different.

What Comes Next

Grotto has not disclosed pricing, membership tiers, or a confirmed opening date. All public sources say “early summer 2026.” For context, day passes at Bathhouse in New York start at $39, with memberships running $145 to $225 a month. Othership’s single sessions in New York start at $58. How Grotto prices against those benchmarks, and whether it adopts a membership model, a day-pass model, or some hybrid, will say a lot about how the team reads the Miami market.

The other open question is what it actually takes to build and operate a facility like this at 7,500 square feet. That footprint is roughly one-fifth the size of Bathhouse’s 35,000-square-foot New York locations, which means the guest-flow design, revenue-per-square-foot math, and capacity management will all look different. Smaller can be an advantage (lower buildout costs, faster break-even) or a constraint (fewer guests per session, less room for premium programming). The answer depends on execution.

Why It Matters

When a real estate developer, a former nightlife operator from The Standard and Faena, and a restaurant founder build a social bathhouse together in Miami’s busiest going-out district, it confirms something the industry has been signaling for two years: commercial sauna is becoming an operating model, not a decorative amenity. Grotto is not a spa inside a hotel. It is a standalone venue designed to compete for the same Friday night as the bar next door. That a developer is underwriting it as real estate, not a lifestyle brand play, makes the signal stronger. If it works in a warm-weather nightlife city without venture capital, the category just got a new proof point.

The Bottom Line

Grotto Baths is the first social bathhouse to test the category in a city that does not need thermal relief. The team is uncommonly well-assembled for the task, and the capital structure signals conviction that a bathhouse can pencil as real estate. Pricing, programming, and an opening date are still to come. When they arrive, SaunaNews will be watching.