How to sneak into my girlfriend's room in a hotel without her finding out?

Um ... Well, to know when the hotel cleaner cleans the room, you should put things at the hotel counter in advance and ask her to come down and get them when cleaning the room. Just say it's from someone. She won't lock the door when she goes down. You can go in, but pretend that the cleaner thinks you live in this room, and then you will know what to do. . I hope it helps.