How to find a place to take a woman to have sex while on vacation?

Assume: I'm going on vacation/business trip/ect. I book a 1 person hotel room. Then, during the vacation, I meet a women in a bar and we want to have sex, where should I take her?

One obvious answer is: at her place. But what if she lives with family? I think it's inappropriate to take her to my hotel room, because I've paid for 1 person, and the hotel can find it as violation of contact. Or am I wrong? Another solution I can think of is quickly opening a booking app on my phone, and finding the closest hotel with 2 people rooms available (and 24h register desk). But what are real good solutions?