Shared or Private Space

Looking for large bedroom (ensuite preferred, but not necessary), studio or flat in a central location with easy access to public transportation to Heathrow. I travel for work (Flight Attendant) and ideally would like a quiet, safe, clean space to come home to! I intend to be out exploring and/or traveling during my off days. I'm pretty independent, am very accustomed to respecting shared spaces but am also friendly and can be sociable once I get my beauty rest.
Areas of interest: Kensington, Chelsea, Marylebone, Hammersmith, Fulham, West Kensington, St. John's Wood or immediate surrounding areas.