which would be an "outcall".   I understand that it might not be discreet if other persons are traveling with you in adjoining rooms.  You might finagle a different room on another floor if you tried.  
If you want to get a room just for your visit, you should expect to pay for it.  Let her book it in her name (no tracks) & reimburse her the cost in cash in addition to her donation.  Never leave a provider in possesion of a room in your name.  She could run up charges or get into trouble & the trail would lead to you.

The lady may not be willing to set up her in call at that particular property for any number of reasons.  You can always ask of course but you will probably have to ask her to book the room, see only you, and you should expect to pay for it.

As far as suspicion goes well, yeah, you are going to be in a hotel where people know you wondering around on a floor that you are not staying on.  If you are REALLY lucky someone you know will see you coming or going from the escort's room...

I dunno, in this case you may be better off going to another hotel to get laid.

out in the middle of the afternoon and then come back in. "Sure was great to see Fred again. We had a chance to talk over old times."

When he travels for business, he'll book a hotel room (he has to or there would be suspicion), and asks me to book my own room at the same hotel.  

Reason being, he wants an "overnight" visit but is a bad sleeper and likes his own room for sleep.

So we hook up for a few hrs in the evening, then I go to my room and sleep, and come back in the morning.

I have absolutely no problem with this.  (Why would I?!).

So, as long as you cover the cost of her room and explain the situation, I'm sure she wouldn't mind doing whatever you ask of her.