Elahni is a first of its kind Wellness Speakeasy®. As a private, immersive space designed for deep restoration, we blend the timeless practice of Temperature Contrast — through a traditional Finnish sauna and ice baths — with an adaptogenic tonic bar and a curated library, creating an atmosphere that invites both stillness and connection.

Is this contrast therapy?

We call what we do Temperature Contrast, a guided experience alternating Finnish sauna at 180°F and ice bath immersion at 39°F. While the practice shares roots with contrast therapy, our approach is different: every session is hosted and guided, limited to four guests, and designed around nervous system restoration rather than physical recovery alone. If you're searching for contrast therapy in NYC, this is what it looks like when the experience is built from first principles.

What is Temperature Contrast?

Temperature Contrast is Elahni's guided practice of alternating between extreme heat (Finnish sauna at approximately 180°F) and cold immersion (ice bath at 39°F) across three intentional rounds. Each session includes breathing guidance, aromatherapy, and adaptogenic beverages. The practice trains your nervous system to move between states of activation and recovery with greater ease, building resilience that extends beyond the session into daily life.

Is Elahni a self-guided experience?

No, Elahni is not a free-flow space. Our sessions are thoughtfully facilitated to create a structured and intentional journey. This ensures every guest experiences the full restorative benefits of our practices. As such, it is important each guest arrives at least 5, ideally 10, minutes early.

What does a typical session at Elahni include?

Each Temperature Contrast session blends aromatherapy-infused heat exposure, ice bath immersions, and moments of stillness. You'll also have access to our adaptogenic tonic bar and curated library, all within an intimate setting designed for reflection and renewal.

What are the benefits?

Temperature Contrast at Elahni supports nervous system regulation, improved sleep quality, more stable energy levels, faster physical recovery, and a calmer stress response. The alternation between heat and cold trains your autonomic nervous system to shift between activation and rest more efficiently. Over time, your capacity to stay composed through challenging experiences deepens.

How many people are in a session?

A maximum of four. This is intentional. Our intimate scale creates the conditions for psychological safety, authentic connection, and the kind of nervous system downregulation that large group settings cannot provide.

When should I arrive?

To honor the experience for everyone, our doors close 10 minutes after each session begins. Please plan to arrive a few minutes early to settle in. If you arrive later than this window, entry cannot be guaranteed.

Do I need prior experience with saunas or ice baths?

Not at all! Our guided sessions are designed for all experience levels. Our hosts will support you throughout, offering guidance and modifications to ensure your comfort and safety.

What should I bring to my session?

We provide towels & have lockers & showers available. We recommend bringing a swimsuit and a water bottle. Minimalist, comfortable clothing is ideal for both the sauna and ice baths.

Yes we have men's and women's locker room with showers, hairdryers, etc.

How long is each session?

Sessions are 70 minutes, however please allow allow a little more time after for changing & having a drink at our tea & tonic bar.

Can I book a private session?

Yes! We offer private bookings for individuals or small groups looking for a more personalized experience. Please contact us directly for availability and pricing: team@elahni.com

Is Elahni suitable for people with health conditions?

If you have any health concerns, especially related to cardiovascular or respiratory conditions, we recommend consulting with your healthcare provider before participating. Please let our team know of any concerns so we can best support you.

Is there an age limit?

Yes, all guest must be at least 18 years of age.

Do you allow walk-ins?

No, all sessions must be booked in advance. please see our reservations page or email for more info.

What is your cancellation policy?

Cancellations made at least 24 hours in advance will receive a full refund. Cancellations within 24 hours are non-refundable due to our intimate session sizes.

How is Elahni different from a bathhouse or spa?

Elahni is not a spa or bathhouse. We're a wellness studio focused on nervous system health through guided Temperature Contrast. Sessions are limited to four guests. Every session is actively guided by a host. The experience is designed around interoceptive awareness, training your ability to sense and regulate your internal state. We call ourselves a wellness speakeasy because the space is intimate, intentionally hidden, and designed for depth over volume.

Where is Elahni located?

12 W 27th St, Floor 2, NoMad, Manhattan. The entrance is intentionally discreet. We share exact arrival details when you book. No walk-ins; all sessions are by reservation only.

Cold Plunge in NYC, NoMad

Cold plunge and ice bath in NYC

Elahni runs a guided cold plunge in NoMad, Manhattan, paired with a traditional Finnish sauna. The plunge sits around 39°F, the sauna around 180°F, and over 70 minutes a host moves your group of four or fewer between the two. Sessions are $65 per seat and reservation-only.

Reserve a session

Why it is paired with heat

A cold plunge does more when it is paired with heat. At Elahni the plunge is one half of a rhythm: into the sauna to warm through, into the cold to reset, and back again, a few rounds across the session. That contrast is the point, and it is what separates this from stepping into a cold tub on its own.

The plunge is deep and properly cold, held around 39°F. A host guides each round, so you know when to get in and how long to hold, which makes the cold far easier to meet than going it alone.

Where it is

Elahni is in NoMad at 12 W 27th Street, Floor 2, central to Flatiron, midtown, and downtown Manhattan. If you have been looking for an ice bath or cold plunge near you in the city, it is an easy walk from Madison Square Park and the 28th Street trains.

Kept small

Each session holds four guests at most. The cold is intense enough without a crowd watching, so the room stays calm. Reservations are required to keep it that way.

Common questions

Where can I do a cold plunge in NYC?

At Elahni, 12 W 27th Street, Floor 2, in NoMad, Manhattan. The cold plunge runs alongside a traditional Finnish sauna, so you alternate between cold and hot rather than plunging on its own.

How cold is the plunge?

Around 39°F. Cold enough to do the work, held steady through the session. Your host guides how long to stay in, and most guests find each round easier than the last.

Is a cold plunge the same as an ice bath?

In practice, yes. People search for both. The plunge at Elahni is a deep, properly chilled cold pool you submerge in, paired with the heat of the sauna for full contrast.

How much is a session and how long is it?

$65 per seat for 70 minutes, limited to four guests. That covers guided rounds through both the sauna and the cold plunge, not a single dip.

I have never done cold exposure. Is that okay?

Completely. Many guests are first-timers. The host eases you in and you control how long you stay. See what to expect on your first visit.

Sessions are limited to four guests and reservations are required.

Check availability

Why it is paired with heat

Where it is

Kept small

Common questions

Join The Community