I had a guest use another guest rooms bathroom one morning to shower (it is my other room with a private but across the hall bathroom)... I could hear that shower running from the kitchen (right above) and I knew the room was vacant the night before. When I ask him why he showered in the bathroom that wasn't his, he insisted that he didn't have a shower or tub in his bathroom. I said, "there most certainly is one! He was furious and stormed upstairs to investigate. With me right behind, he walked in and out of his bathroom and said, "well, you hide that real well" even more furious.... I don't know what he thought was BEHIND THE CLOSED SHOWER CURTAIN OF A SHOWER/TUB COMBO?!?!?!.