I thought the apartment/flat was clean and the heating kept the place warm -- which is important for Scotland in the winter. It is a permanent Airbnb, i.e. not somewhere that's a home which is being rented out for a few days -- i know some people prefer these kinds of places but i personally prefer staying in a home.
I don't have any major complaints -- the main feeling I have though is that it's simply not worth the money. I paid more than £400 (or close to $600 USD) for two nights at this place. For that kind of money, i could've gotten a room in 5-star hotel in the heart of the city. When I arrived i just felt so underwhelmed, knowing how much i was spending and expecting something much nicer. The building/immediately surrounding buildings were a bit dodgy too (i.e. there were smackheads standing out the front smoking -- who seemed harmless enough, but it doesn't fill you with confidence). This reddit post gives a good discussion of the neighborhood: https://www.reddit.com/r/Edinburgh/comments/8ndkz0/what_is_viewcraig_street_in_edinburgh_like_to/ Anyway, as I say, the place was fine - just not worth the price tag