Haha, reminds me of the time I booked my very conservative father a room at Berlin's Axel Hotel.

If you've never heard about this place, I'll give you a hint about what makes this hotel so special. Look at this pic from their website. I think it's a picture of one of the hallways:

I guess you understand who is its largest clientele. But how would I know, at the time it didn't say a thing on its Booking.com page about what kind of people this hotel mostly caters to!

So my dad had one weird stay there indeed.