After going to a very shady incall a few months ago and a much nicer one recently, I realized that the type of incall (example: hotel, notel, apartment, etc.) and a description of the quality of incall (example: 4-star hotel, sketchy motel) may be useful categories to have in reviews.
For safety and personal comfort reasons, it would be nice to know what type of incall a provider regularly uses which may help you decide if you would see a provider or not.