This is a very nice flat. The living room has two windows opposite eachother - one looking over Carlton Hill and other Arthur's Seat and it was a very pleasant to sit and read in the afternoon after a day's siteseeing. The location is also great - just a short walk to the Castle, Arthur's Seat and so on, and with a small supermarket just a few minutes walk away too. Also with a kid, it wasn't so immaculate or full of fragile ornaments that I spent the whole time feeling nervous about things being broken!
However there were just slightly too many niggles for me to give it five stars e.g. the wireless wasn't working initially (the router had been unplugged by the cleaners) and was rather temperamental, the fridge was freezing everything solid and I couldn't get the main oven to work (I suspect this was the result of a powercut somehow - the microwave was a combination oven though). I got to the point where I felt I might be pestering the hosts a bit too much :-)
I wouldn't necessarily let this put you off booking the place though as I did get the impression that I was just rather unlucky with various things - it is a great flat and location.