Superyacht Design / Interior Design / Wellness, Spa & Gym Design

Guide

Saunas, Hammams and Treatment Rooms

Heat and treatment spaces need careful interior zoning because each creates different levels of privacy, moisture and activity. Saunas, hammams, massage rooms, showers and relaxation spaces should form a comfortable sequence rather than isolated specialist compartments.

Published: Aug. 10, 2026

Last verified: Aug. 10, 2026

Heat experiences should sit within a broader wellness sequence

A sauna or hammam is rarely used in isolation. Guests may change, shower, spend time in heat, cool down and then rest or receive a treatment. Planning these spaces as a sequence reduces unnecessary movement and creates a more coherent spa experience.

Saunas benefit from compact, intentional proportions

A sauna does not need to be physically large to feel luxurious. Comfortable bench depths, clear headroom and a simple entrance can produce a more convincing room than an oversized volume with unused floor area.

Hammams rely heavily on material continuity

Steam rooms often use continuous hard surfaces across walls, benches and floors. Material transitions, joints and integrated lighting therefore become especially visible and should be designed as part of one coherent enclosure.

Treatment rooms need strong privacy

Massage and body treatments require a more private atmosphere than an open gym or social spa lounge. Entry position, sound separation and screening should prevent casual views into the room when doors are opened.

Therapists need working space as well as guests

A treatment table cannot fill the room wall to wall. Therapists need access around it, storage for supplies and appropriate working clearances. Interior planning should test the room with real equipment dimensions.

Showers should connect wet experiences logically

Guests may shower before or after using heat facilities. Locating showers near sauna and hammam areas avoids long wet routes and helps keep other treatment and relaxation spaces dry.

Cooling and relaxation zones complete the experience

After a sauna or steam session, guests may want a cooler place to sit or lie down. A nearby daybed, lounge or sea-facing terrace can provide this transition without requiring guests to return immediately to a public circulation area.

Lighting should remain calm and indirect

Wellness interiors generally benefit from shielded or integrated light rather than bright exposed sources. In treatment and heat rooms, lighting can reinforce the sense of enclosure while still providing enough visibility for comfortable use.

Storage should remain close but unseen

Towels, robes, oils, slippers and treatment products need regular replenishment. Integrated cupboards or nearby service storage can keep these items accessible without turning the spa into a visible working environment.

The strongest spa rooms feel simple despite technical complexity

Heat, moisture and specialist equipment make spa interiors technically demanding, but the guest should experience calm surfaces and clear circulation. Good design absorbs the complexity behind an apparently effortless sequence of spaces.

Sources and verification

Primary source: Feadship — Ocean Victory

  • Feadship Ocean Victory — documents a health club containing gym, sauna, hammam/steam and massage rooms as part of an extensive onboard relaxation programme.
  • Feadship Project 825 — incorporates a sauna within its bridge-deck spa centre alongside the gym and exterior relaxation terrace.
  • Feadship Concept C — provides a dedicated full-featured spa beside the gym, with both spaces linked to opening sea terraces.

This guide concerns interior sequence, privacy and material character. Steam generation, temperature control, waterproofing, ventilation, drainage, electrical systems and safety requirements require specialist technical design.