Home saunas are usually pretty low maintenance, but to help increase its longevity, experts recommend laying a towel on the chair in the sauna, as this will help prevent the wood from being tainted by sweat. You should also leave the sauna door open after you have finished using it.
We wanted to install new shower arms to hang bathroom stuff from but we ended up spending a lot of time and reinstalling the old arms and just adding new shower heads to them (I could replace the shower heads...