Spa Nalai: treatments, facilities and what to book

Spa Nalai is Park Hyatt New York’s full-service spa on the 25th floor offering KOS PARIS signature treatments (including the KOS Immersion), two treatment suites (one with a Central Park view), a eucalyptus steam room, hammam, hydrotherapy facilities and a hot tub. Book massages or the signature KOS Immersion treatment in advance—spa hours are Wednesday–Sunday, 10:00 a.m.–7:00 p.m.
In this guide
What Spa Nalai is (and where it sits in the hotel)
Spa Nalai is the 25th-floor spa at Park Hyatt New York and operates as the hotel’s full-service wellness facility. It relaunched in partnership with KOS PARIS as the brand’s first exclusive New York spa.
The spa shares the 25th floor with the hotel’s 65-foot indoor saltwater lap pool, hot tub and steam room; some hydrotherapy amenities and pool access require a room key. Spa hours and public-access details are set by the hotel.
- Location: 25th floor of Park Hyatt New York (153 West 57th Street).
- Brand partner: KOS PARIS (signature KOS Immersion Treatment listed).
- Spa hours: Wednesday–Sunday, 10:00 a.m.–7:00 p.m.
| Feature | Fact |
|---|---|
| Partner | KOS PARIS |
| Floor | 25th |
| Open | Wednesday–Sunday, 10:00 a.m.–7:00 p.m. |

Treatments to book — what to choose
Spa Nalai’s menu includes massages, facials and signature combination treatments. The highlighted signature is the KOS Immersion Treatment, which combines a full-body massage and a facial.
If you want a range of intensity, the spa lists short targeted treatments (for example a 30-minute back, neck and shoulder massage) up to longer signature sessions (for example a 90-minute Nalai Signature massage).
- Quick fix: 30-minute back/neck/shoulder massage (listed starting price noted in sources).
- Deep relaxation: 60- or 90-minute Nalai Signature massage.
- Signature combination: KOS Immersion Treatment (massage + facial).
| Type | Common length | Price guidance |
|---|---|---|
| Targeted massage (e.g., back/neck/shoulder) | 30 minutes | Starts around $125 (source lists starting price) |
| Nalai Signature massage | 90 minutes | Up to $350 for the 90-minute session (source lists this top price) |
| KOS Immersion (massage + facial) | Varies | Listed as signature offering; check spa for current pricing |

Facilities and hydrotherapy to use before or after treatments
Spa Nalai’s on-site facilities include a eucalyptus steam room, a hammam, hydrotherapy features, a hot tub and a relaxation lounge. One treatment suite overlooks Central Park.
The adjacent 65-foot indoor saltwater lap pool (also on the 25th floor) has underwater speakers, a lifeguard on duty and a reported ADA-compliant pool lift; pool access is organized by the hotel and typically requires a room key.
- Eucalyptus steam room and hammam for warm-up and post-treatment circulation.
- Hydrotherapy and hot tub for recovery—check staff for recommended timing around massages.
- Relaxation lounge to extend quiet time after your service.
| Facility | Notes |
|---|---|
| Eucalyptus steam room | Part of Spa Nalai's listed amenities |
| Hammam | Listed among spa hydrotherapy features |
| Hot tub & hydrotherapy | Available on 25th floor; pool area has a lifeguard |

How to book, hours and practicalities
Spa appointments should be booked in advance—especially for weekend slots or for signature KOS PARIS treatments. The spa’s posted hours are Wednesday through Sunday, 10:00 a.m.–7:00 p.m.
If you’re a hotel guest, ask the front desk or concierge to reserve treatments; walk-ins may be accepted subject to availability. Cancellation policies and gratuity practices are set by the spa—ask when you book.
- Book via the hotel concierge or the spa directly (ask front desk for current contact).
- Spa hours: Wednesday–Sunday, 10:00 a.m.–7:00 p.m. (confirm for holiday variations).
- Ask about required arrival time (many spas advise arriving 15–30 minutes early to use the facilities).
| Item | What to confirm when booking |
|---|---|
| Treatment length & price | Confirm exact duration and current pricing |
| Use of hydrotherapy/steam rooms | Whether these are included with your treatment |
| Arrival/cancellation policy | Recommended arrival time and cancellation fees |
Pairing spa time with pool and fitness
Because Spa Nalai and the indoor saltwater pool share the 25th floor, it’s easy to combine a treatment with a swim or a gym session. The fitness center is open 24 hours and includes Technogym equipment, Peloton bikes and a Fitness MIRROR.
Plan your schedule so you don’t go straight from an intense steam/hammam into a cold outdoor area—ask spa staff for recommended sequencing (for example steam first, then massage, then a gentle pool soak).
- Fitness center: 24-hour access, Technogym cardio equipment, Peloton and free weights.
- Pool hours: indoor saltwater lap pool open daily from 6:00 a.m. to 9:00 p.m. (room-key access).
- Lifeguard on duty at the pool; children under 18 require adult supervision in the pool area per hotel rules.
| Resource | Hours / notes |
|---|---|
| Fitness center | Open 24 hours; adjacent to pool |
| Pool | 6:00 a.m.–9:00 p.m.; 65-foot saltwater lap pool with underwater speakers |
| Spa Nalai | Wednesday–Sunday, 10:00 a.m.–7:00 p.m. |
Practical tips and what to expect during your visit
Arrive a little early to complete any intake forms and to use the steam room or relaxation lounge beforehand. The spa staff can advise on whether specific treatments should be scheduled before or after pool/hydrotherapy use.
Payment, gratuities and cancellation policies are set by Spa Nalai and Park Hyatt New York—confirm details when you book. If you're staying at the hotel, the front desk or concierge can add charges to your room folio.
- Bring or request any health notes for your therapist (allergies, recent injuries, pregnancy).
- If you’re staying in a Suite, 1 Bedroom or other room type, ask concierge to coordinate spa and pool timings with your schedule.
- Pets are not permitted in the pool area; the hotel runs a separate 'Very Important Pooch' program but animals are excluded from spa/pool spaces.
| When to book | Why |
|---|---|
| At least several days ahead (weekends especially) | Spa has limited hours and treatment suites; signature services are popular |
| If staying at hotel | Concierge can coordinate appointments and charge to room |
| If not staying at hotel | Call ahead to confirm availability—spa may prioritize hotel guests |


