Saunas & ice baths in Mataram

Mataram is the exception on this list. It is a city, it is inland, and both of those things make a sauna project simpler than anywhere else in Lombok.

Less salt changes the specification

Away from the coast the corrosion problem drops off sharply. We still build to a coastal standard on the hot room's internals because 90 °C and humidity do their own damage, but the relentless A4/316-or-die logic that governs a beachfront job relaxes here. That shows up in the price, and it shows up in a maintenance schedule that is genuinely lighter.

Indoor installations

This is the one part of the island where most of our enquiries are for indoor rooms — a spare bedroom, a large bathroom, a converted garage in a family home. That is a different job from a garden cabin: no weather to fight, but no easy ventilation route either, and drainage that has to tie into existing plumbing that was never designed for it.

An infrared cabin is the simplest indoor answer by a wide margin — no flue, no drainage, no dedicated ventilation, and it plugs into a normal circuit. For a traditional room indoors we are into custom territory, with a proper vapour barrier and a designed air path. The ventilation guide explains why that path cannot be an afterthought.

Power is usually there

City supply is more likely to carry a real heater, and three-phase is more commonly available and less painful to arrange than out on the coast. It is not automatic — we still check the board — but Mataram is the one place where "can my supply run this?" is frequently just yes. Detail in electrical requirements.

Ice baths in the city

The cold half gets harder, not easier, indoors. A chilled plunge rejects heat into the room it sits in, so putting one in an enclosed indoor space without thinking about where that heat goes means the chiller is fighting itself. Outdoors in a courtyard, in shade, is almost always the better answer even in a city home.