This is the PERFECT place to stay in Edinburgh. The ceilings are probably 18' high, the record player works, and you might never want to leave the flat. But if you do, it's incredibly convenient to all the best sites, has a super safe vibe in very cute neighborhood, and there are some adorable cafes within skipping distance. Stephen went out of his way to accommodate us and was very communicative. Don't bother looking anywhere else; if this place is available for your dates, snag it!
Note: it is up a set of easy stairs, but not sure if it's wheelchair accessible. I don't recall seeing a lift.