These are not so much "Asian" hotels as they are Asian providers booking in hotels and apartments along Airport Rd. The number usually connects to an English speaking operator, who directs to a particular location. 2-3 call system. Many times the actual provider has limited English, or none at all. It can be awkward, but usually the Asians were more honorable than American escorts. The Asians get right to business. It can be a crapshoot. It can also be GLORIOUS!
On several occasions there were providers who were really pretty, enthusiastic and nasty in a good way. They would share their personal numbers to send/recieve texts (thanks, Google translate), and see you as often as you wanted, for discounted rates once you cut out management. There was one who another monger and I kept busy for a month! Her initial plan was to stay for a week. We brought food from local Asian restaurants. We timed our schedules, and alternated days/nights. She was always happy to see us. They respect and enjoy good customers. This was in the 2010's, but I still get random texts from time to time. Unfortunately, or fortunately the best ones have moved on to greener pastures...
Never done STG, but if I did, I'd visit Asians exclusively!