This apartment is great! I stayed for 3 weeks for a short visit at the University of Edinburgh, and it's conveniently just a 5 minute walk from George Square. It's also close to great restaurants -- including Kim's Mini Meals, which is 2 doors down and fantastic-- and pubs, as well as Salisbury Crags. Communication with the hosts was great. For example, the washer/dryer broke during my stay, and within a couple of days they had solved the issue and had sent a brand new washer to the apartment.
A few things to be aware of- the bedroom is close to the street and on the first floor, so if you have a tough time sleeping with noise, this may not be a great option for you as the students can be quite loud passing by at night. The apartment itself stayed pretty damp/cold, but this may have been mostly my fault as I didn't realize that I could adjust the thermometer myself until the final week (it showed a "locked" symbol so I assumed I couldn't control it myself, but turned out I was able to when I tried again later.) Otherwise all good things!