Massively sub-standard. Edinburgh has a lot of sardine-squeeze Air BnB’s but this one has one room too many. It is too small to be charging the same or more than the others around. The wash basin is in the hallway because the flat is just too small for three bedroom crammed in together. The bed was a second hand mattress that must’ve been thrown out by whoever owned it before, with springs poking painfully through the topper - get assurance that a new mattress has been put in Room 9 before you book.