We had a great stay in Marks apartment. Check inn was super simple and getting in contact with Mark was always easy. Mark also accommodated a late check out for us.
The location is great for getting around, very close to many transport hubs. We didn't really explore the area too much so can't really comment on that. The flat was nice and warm with a very comfy bed. Shower was also great; Its a really great place to stay. There was a snow storm during our holiday so was a relief to have a place we could relax in to avoid the cold outside!
As mentioned in Marks description there some noises when the boiler comes on, slightly louder than we were expecting but didn't bother us; though maybe worth considering of you are a light sleeper visiting in the winter.
You will struggle to find anywhere better value. I thoroughly recommend Marks place.