I stayed at a "hotel" in Denver a few years ago. It was advertised as a hotel on Hotels.com, and we booked because we thought it was cool that the unit had a full kitchen and was like a condo. We thought it would be the best of both worlds, hotel amenities and Airbnb style room. We get there, and it's basically an apartment building that they've turned into a hotel. They have no staff on site, and I had to download an app to check in and do a face scan. Super not privacy friendly. Then one day we stayed in and we're having a few drinks and conversing. This was 5 guys. We weren't being beligerant or loud, just talking. It was maybe 4 pm, and not quiet hours. I get a text saying there was a noise complaint. Then we bailed and got another text saying there was a 2nd noise complaint. They threatened us with a $500 fee the 2nd time. I told them we were no longer in the room, so it wasn't us. We later found what we assumed was a bug device that notified them if we went over a certain decibel level.

I never got charged, but I was ready to fight tooth and nail with my credit card company if they did. It was very weird, and I would never book with that company again.