One of the best things I did was nail on clear plastic corner protectors on all the corners of the walls. I swear the renters were playing bumper cars with their luggage. I used to have to spend two days rebuilding and repairing and repainting corners but haven’t had to since I installed them. Now I just have to fix the washer and dryer that I guess they launder bricks in, and replace broken toilet seats and fix broken table legs and replace burned out garbage disposals. I’ve gone through 3 sets of washers and dryers in the 5 years I’ve owned the place. Two of the sets have been commercial. So far, they haven’t killed the speed queens. But I know they will eventually.