Silent + cheap spaces for conducting therapy sessions

Hello people of Mumbai Reddit! I am a new therapist and see a limited number of clients online. I don't have a space of my own yet and can't take sessions from home. I have tried local cafes and they turn out to be noisy for online sessions. This despite noise cancelling earphones etc. It ends up burning a hole in my pocket too, for all the hours spent there. Libraries are automatically ruled out, as it requires me to talk. Please suggest a few places between Churchgate and Mumbai Central that fit the bill?