I guess we're talking about a chain rather than a small 4-bedroomed family-owned place?
Give her a call to ensure she's ready for you, get the room number, walk in, walk up to the room, knock the door. The place will have a high turnover of customers, with shift swaps and the like, the folk on the front desk won't look twice at you unless you go wearing a trenchcoat and a copy of the Times with eyeholes cut in the front.