I stayed in the studio for one month. It is small, but nice and I mostly had no problems with my stay. It is a bit far from the centre of the city, but Edinburgh has excellent public transport so that wasn't a problem. It is also not the nicest area in the city, but that's only an aesthetic problem.
When I arrived I found the studio thoroughly cleaned, except something above the kitchen (maybe an extractor fan, but it didn't work) that probably has never been cleaned. This also made some noise throughout the day/night which was a bit annoying, but not too much. The hosts had provided me with two sets of clean towels and shampoo/shower gel. The dishes were mostly clean, but the pots had scratches in them and they should probably be replaced. When checking in there was a problem with the wifi, but I communicated with the agency managing the studio and it was quickly resolved.
Overall I enjoyed my stay and the studio made a nice home for this one month.