Hotel escorts
Hotel escorts is a term used in escort advertising for appointments at hotels. It describes the setting, not a separate type of sex worker.
The wording alone does not tell you whether somebody is an independent escort or works through an agency. It also does not mean the hotel employs them or has any connection with the advert, but often hotel escorts will leave flyers in hotels in certain countries or sometime has connection working in hotel.
Privacy
A hotel name or room photo in an advert proves little on its own. Claims about hotel connections should not be taken as fact without evidence.
Hotels have their own visitor rules. An escort advert cannot override those rules, and paying for a room does not remove anybody's right to refuse sexual contact.