36 year old professional looking for a room

Hi, my name is Alex. I'm 36 and I work full time in the heritage sector. I'm looking for a room in London. My budget is £800-900 per month, bills included. I am interested in finding either a room in a flat share or HMO. I am looking for a place which is friendly, but also gives people their own space to wind down after work. My interests include music, films, reading, video-games and speaking French. I would like to live in a place with people who have similar interests and are around the same age. I am shy and quiet and would probably do best in a house with other friendly introverts :) I am only interested in rooms with tenancy agreements as I am looking for somewhere long term and stable.