I’m looking for a very simple rehearsal room that I can practice singing in. No need for any amps/speakers etc. All I need is a soundproof room that I can sing as loud as possible in without worrying about making too much noise. A piano would be helpful but not essential. I’m based in NW8 0SN (nearest stations are South Hampstead and Swiss Cottage), so somewhere I can get within 30-45mins would be good.