Good location to reach old town and Arthurs Seat - so all of the main tourist places.
The flat is very clean and has all of the basic things you need. The bathroom and shower work well and the bathroom has been refurbished recently to a good standard. There are a number of restaurants and pubs within easy walking distance.
The block it is in is safe but not pretty and decor is dated. The heating works well - we turned it on when we arrived and the flat was warm within half an hour (important in an Edinburgh winter!)
In summary its a good base to see Edinburgh, but it's not cute.