What a great flat! We very much enjoyed our stay at Sam's. His friend John met us promptly and guided us through the flat. It has two comfortable bed rooms, a fully equipped kitchen (we appreciated the machineta and filter coffee machine as well as the sharp Global knife :-)). The washing machine was a big plus as well as we ended up staying 10 days in the flat.
The living room which is at the center of the flat is very cozy and Internet and TV worked smoothly. The flat was clean (only book shelves and printer desk were a bit dusty but didn't bother us). Bathroom is great, hot water, bath or shower option. Our bedroom (largest one on pictures) was very comfortable and so was the bed. Plenty of space in cupboards and drawers to put away your things.
We really appreciated the natural light in the flat as well, main bedroom has windows on both east and west sides. The heating (radiators) worked well too although we barely used it as weather was ok. The street is very quiet but steps away from main street where you can find nice cafes, bakeries, delicatessen store, etc.
The Hampstead tube station is conveniently located nearby. And best of all is the beautiful Hampstead Heath, a park/natural reserve with small lakes...less than 10 minutes walk from the house.
To sum up, don't think twice, we highly recommend Sam's flat!