Great cosy flat around a 15-20min walk to the castle and old town. Good local restaurants and bars surrounding.
If you are coming in winter, the heating is a little tricky to function and the toilet flush fills the bowl before flushing away (I'll leave your imagination for that one!) Don't let the entrance way/stairs put you off on way in, the flat is great.
We stayed for 4 nights and managed to fill all the days with activities to do in Edinburgh. A small tesco is a less than 5min walk away for necessities like milk and wine. Would recommend.