Nothing stolen at any hotels..but...
Dh and I were on our honeymoon in Reno, at the now defunct Rainbow Casino and Resort. During the housekeeping strike.
Anyways, the first night, about 2am, someone comes in the door! We had the security chain on, but that person came in so hard and fast, it snapped off!

Woke us both up out of a dead sleep, and I screamed. Called down, they claimed they "accidentally" gave that guy our room. With all the other issues that happened, I believe it!
(Off note--we didn't get to check in until almost 7pm because our room wasn't ready and didn't get a change of sheets or a cleaning for the 4 days we were there---though I did manage to grab some clean towels off the carts--because they would always show up in the late afternoons, when we were...well, honeymooning

....)
Wait--I was wrong! We were at the pool at a hotel (I want to say ASMo, but I dont' remember for sure--it could have been in AZ or CA also). DH had his watch ($50, at least 10 years old) under his towel, with his room key and glasses. Went back, the room key and glasses were there, the watch was gone. It was so beat up---he wanted to replace it anyways, but it wasn't like it was a Rolex...heck, it wasn't even a Timex!