I stayed at Simon's studio for few days this summer. The apartment is lovely, small and basic, perfect for one person or a couple, it was only a little bit chill during the night (but you have to consider I'm Italian and I've got a different perception of cold :P). The location is great, very quiet and just few minutes walk to the main streets of New Town.
Simon was very pleasant and welcoming, and I highly recommend his place! :)