"Resort fees" are a thing but in my experience you don't see them a lot outside of what are plausibly actual resorts, i.e. typical hotel chains don't usually have them. Of course, there are always lots of taxes that get tacked on. Especially pre-pandemic, I booked lots of hotels. (AirBnB also has cleaning fees etc. although what little I've used AirBnB they seem to be pretty prominently displayed.)