The issue we had was that we didn't hear a thing (not even check-in instructions) from the host until less than 24hrs before our stay, even though I'd sent 4/5 emails and called her several times on the run up to our stay. As we were travelling up from London for New Year's Eve some reassurance that the booking was affirmed would have been useful. We also didn't know the actual address or how to check in until this point - this was worrying.
Overall however it is a nice, clean place with a good location, 18 mins walk to the start of Princes Street.