You won’t be able to choose a single location that is close to all the agencies. Even agencies based downtown have incall locations in several locations around the GTA, and providers are scheduled at varying locations.Downtown hotels are more expensive but that’s where most of the nightlife and action are. It’s pretty rare that a SP wouldn’t be comfortable providing an outcall to any hotel, and typically doesn’t receive any flak from security as long as she is dressed appropriately and is discreet. Many hotels, especially upscale ones require key cards for the elevators( Hyatt, Hilton, Marriott and even higher end independent ones), so keep that in mind if you choose outcall.
Being that you are not here until months end, you might want to peruse the talent at various agencies, check out reviews and see a particular SP(or SPs)catches your eye, then book your hotel accordingly. There are a lot of options outside of downtown as well.
Give back and let us know how it goes!