I have no experience of owning , but know a couple of people who do. one use a conventional electric one which heats up coals, and he uses it at least once a week. the other might as well have a solar powered atomic device as he has never even turned it on. we had a steam room in a bathroom when we moved in and decided not to even turn it on once i had looked at the electrical installation.It had burned through the floorboards. it is now quite a nice shower cubicle. i have to say i am jealous, I have had a really busy time lately and a nice relaxing sauna would be great.