How many straight men are sharing a room in a luxury hotel? Not many I would guess. And if they do I am sure they would be asking for twin beds anyway without feeling embarrassed. With other words: no need for reception or others to ask questions!

Who are the twin bed guests anyway? Families with kids? elderly? There are always many rooms with twin beds in luxury hotels and I do not really know who would normally book them. Not a lot of two friends travelling together and sharing a room in such hotels as far as I am aware of but I might be wrong.