Asian girls are so much more accommodating than western girls that it's like they don't even come from the same planet!
Only downside? Almost no shaved beavers.
Now that's a broad generalization, so it's just mostly true not 100% true.
Hotels? Never had a hotel stop me for bringing a girl in for the night.
Downside? Occasionally you have to walk the girl out or you'll get a call from the front desk making sure you're O.K. This is rare in HK but common in Singapore and Vietnam.