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The oak vestibule of the NOOK sauna with its rain shower, towels on the hook
Vestibule · rain shower option

For spas

A heat step that never competes for therapist hours.

The sauna extends the thermal circuit outdoors — unstaffed, bookable, running while every table stays busy.

Talk to our teamRequest the spa dossier
The operating numbers

What the cabin asks of your schedule.

Session window
30–45 min As a pre-treatment heat step or stand-alone booking
Bathers per session
4–5 Mixed, gendered, or group policies per slot
Hygiene turnaround
~10 min Bench wipe-down, floor dry, bucket + towel reset
Therapist time in-session
0 min Self-service window; reception owns the handoff
Operating temperature
80–100°C Pre-set via HUUM UKU — guests don’t adjust mid-session

On the treatment menu

Three places it earns a line.

Before massage
A 30-minute heat opening softens muscle before deep-tissue work — therapists inherit a warmed client, and the menu carries a higher-priced "heat + massage" pairing.
After the cycle
As the closing recovery step of a treatment sequence, on the same terrace — the guest's last memory of the visit is the one they book again.
As its own booking
A stand-alone session sold on days the treatment rooms are full. It adds capacity without adding a therapist — the only line on your menu that doesn't compete for staff hours.

The dossier carries a treatment-menu pricing template you adapt to your therapist schedule and room utilisation.

Detail of the outdoor vestibule — robe on its hook, rain-shower fitting, slatted timber floor with the linear drain
The vestibule

Robe, rinse, then heat.

The cabin arrives with its own recessed vestibule — robe hooks and a slatted floor that drains, with an optional outdoor rain shower plumbed into the alcove. Guests step out of the treatment room, rinse, and walk into 80°C without crossing your wet floors.

It reads as part of the spa, not a box in the garden — and it gives the heat-and-cool sequence somewhere to live.

Run your ROI in 90 seconds

The math, on your numbers.

Short-let comparable sets report single-digit ADR premiums (AirDNA-based) — a different cohort. Use your own figure.

Estimated annual incremental revenue

$—

Payback period
— months
Investment
$—

Arithmetic on the figures you enter — not a revenue forecast or guarantee. This counts direct sauna revenue only; it excludes the room-ADR and OTA-conversion uplift the dossier models, plus operating cost, financing, and tax.

Book a 25-minute operator call
Materials your hygiene SOP can sign off

Certified glazing, certified timber, verified energy rating.

  • EN 12150 Tempered safety glass Panoramic glazing, European safety standard
  • PEFC Chain-of-custody Canadian hemlock interior, certified supply
  • Rating A Energy rating, verified 80 mm rock-wool, λ 0.034 W/mK
The dossier

The spa dossier: hygiene SOP, menu template, booking scope.

What a spa director circulates before saying yes — the between-session hygiene protocol, the treatment-menu pricing template, and the Mindbody / Booker integration scope.

  • Full material specification + supplier certificates
  • Electrical, foundation, and structural-load drawings
  • Per-property ROI model (your ADR, occupancy, unit count)
  • Lead-time + install-day sequence, base by base
Request the 32-page dossier
Spa FAQ

What spa directors ask before the dossier

  • How does it integrate with our booking system?

    The HUUM JSON API can be scoped against session booking webhooks. We prepare reference integration scopes for Mindbody and Booker during the dossier stage, then map the exact booking objects your account uses. For Vagaro, Squarespace Scheduling, or in-house systems, your engineering team or systems integrator reviews the same API before we commit to an integration plan.

  • How does the sauna fit into a treatment flow?

    Spa directors usually evaluate it as a 30–45 minute pre-treatment opening to warm guests before massage, or as a recovery step at the end of a treatment cycle. Some pair it with a cold-plunge fixture on the same outdoor terrace. The dossier carries a treatment-menu pricing template you can adapt to your own therapist schedule and room utilisation.

  • Does the sauna need staff in the cabin?

    No. The cabin is self-service for the booked session window. Your reception team manages the booking, towels, and the cooling-area handoff (often a covered outdoor terrace adjacent to the cabin). Heater controls are pre-set by HUUM's UKU integration — guests don't adjust temperature mid-session.

  • What is the cleaning and hygiene protocol?

    Standard spa-grade hygiene SOP: a 10-minute turnaround between sessions to wipe down benching with a sauna-rated cleaner, dry the floor, and reset the bucket / ladle / towel set. The cabin's interior (Canadian hemlock + olivine stones) is engineered for daily commercial use; the materials don't retain odour or moisture between sessions. Detailed SOP in the dossier.

  • Can we offer co-ed and gendered sessions?

    Yes — the cabin holds 4–5 bathers. The pattern across the sector is mixed sessions off-peak, gendered sessions at peak, and family or friend-group bookings at weekends. The HUUM scheduling is per-session, not per-time-block, so you can mix policies through the day.

Next step

Show us your treatment menu. We'll show you the new line.

A 25-minute call against your menu and therapist schedule — then the spa dossier with the hygiene SOP and the pricing template filled in for your operation.

Talk to our team Request the spa dossier

Day spas, hotel spas, wellness centres.