Having travelled a lot, I can tell you that with a little creativity any hotelroom can make for an excellent play space.

A chair with arm rests, bed with a bench near the foot end, bath, can all easily be turned into very useful furniture. And of course, my suitcase full of carefully selected kinky goodies will be a nice addition.
Any larger room will do, but here are some delightful suggestions..

AMSTERDAM

W-Amsterdam

Conservatorium Hotel

The Hilton Schiphol

–

ANTWERP

The Gilded

August 

–

COPENHAGEN

Sanders Hotel

–

LONDON

Rosewood Hotel

Royal Cafe Hotel 

–

BERLIN

Zoo Hotel