DP is currently repainting my wooden bath panel while I'm lounging in bed 'working' i.e. on MN, and I'm pretty sure it's the first time he's had to do it in many, many years.
The only time the panel had to come off was during the search for the source of a possible dead mouse smell, so make sure you know how to get the panel back off again for any kind of rodent-based-death-emergency, leaks, etc.
Otherwise, I think it is very low maintenance and looks nice. Mine is basically thin wooden vertical slats attached to a board (poss MDF).