The Hot Box Sauna Bolands Mills

The Hot Box Sauna sits in unit 7, building 2 of Bolands Mills on Barrow St, a short walk from the Dublin city centre and docklands. It's a straightforward bathhouse setup built around two things: sauna and cold plunge. The saunas themselves are hand-crafted in Ireland by the operator's sister company, Aalto Saunas, so the woodwork and build are a point of pride here rather than an afterthought.

The format is simple heat-then-cold contrast bathing, done as a day pass rather than a membership. There's no spa menu of treatments or extensive wet areas to wander through — this is a focused setup for people who want to sweat, plunge, and repeat, solo or with a group of friends doing the rounds together.

Opening hours run long across the week. Monday through Friday the doors are open from 7:00am to 10:00pm, giving early risers and after-work visitors plenty of room to fit in a session. Weekends shift slightly later, opening at 9:00am and running to the same 10:00pm close on both Saturday and Sunday.

Given the central Dublin address inside a mixed-use building (Tower 2 of Bolands Mills), this reads as a city spot for regular sauna-goers rather than a destination retreat — the kind of place you'd drop into on a lunch break or after work rather than plan a half-day trip around. Worth confirming current day-pass pricing and any booking requirements directly with the venue before visiting, since specifics aren't listed here.