My stay at Sandra's place was very lovely.
Sandra is a welcoming person, you feel right at home (for me the cats also helped with this at home feeling).
The bedroom is not very big but just big enough. During the day we were in the city anyways. All the other things in the home worked accordingly.
In the few days in Edinburgh I fell in love with the city and if I would visit it again I would definitely try to stay at Sandra's again.