I would hate the small room more than the large room. If the therapist did not cover up the window on the door and for some reason that therapist was the only therapist available to hire and one wished to hire one, then I would suggest taking in a piece of tape and cloth to cover the window on the door with, and remove and take it with you when you leave. If the therapist protested - I would mention privacy rules. I would never hire a therapist who blocked the doorway.