Tom's apartment is really great, it is very modern, comfortable and clean.
It is walking distance from the city center and has a great view on some of the city monuments. If you come with a car it is very convenient, the building has a private parking which is very secured.
Moreover Tom is very nice and super helpful, he gave us a lot of great recommendations for dinners in town.
I would definitely highly recommend staying at The Bellevue apartment, it has been a great experience for us and we would go back without a doubt if we ever come back to Edinburgh!