Meeting in hotels!

[Trinity-Belle]

In any reasonably large hotel, nobody would know that you're not a regular customer who checked in earlier that day and has just been out for a stroll - so now you're just "going back to your room".

If you're concerned, just wait somewhere nearby until you're given the room number (or the floor, at least) and permission to go on up. Then just stroll in as if you own the place and go for the lift.

Nobody will stop you. If they do: your "girlfriend" is in your room, waiting to let you in, which is why you don't have your keycard with you.

Spot on.

Hotels are pretty anonymous places... the trick is to look confident and just strol past reception with your head held high. If you can't see the lifts immediately then head for the loos which are always clearly marked. Why? Because when you come out of the loo, you will have a different perspective and may see something you missed on your way in.