Never had a problem with wg and hotel.

Firstly don't let reception know.
Secondly let her know you will her at entrance or in the bar.
Some have arrived looking like wg and other dress more conservatively and never been harassed by guards or reception staff.

However you will raise suspicion based on your choice of companion. As in my case older man, young ebony lady but you just get judgemental looks (which if she is any good you forget very quickly).

If you really want to be safe go it, take her to lunch, dinner and return with her for dessert.

Once done she will let herself out. I normally escort her out only because I really enjoy her company and for me it's just free time with the girl. This self serving act has scored me some brownie points with a particular wg where the next session is loaded with charm and affections from her.

Eish. Too much stories here.
See.. Prostitution is illegal but being a prostitute is not illegal and no one can stop anyone from visiting you at a hotel.

In other words you a wg it does not mean you cannot go to the shop or a hotel. You can go wherever u want to and hotels cannot ban clients from seeing companions. If that is the case book another hotel and take your business elsewhere.