First and foremost, this flat is excellent. We found it bright, extremely clean, larger than expected, and in a fantastic location. I stayed here in July with my father, brother, and sister-in-law for a little over a week after completing a walking holiday in the north of England. The flat was easy to get to and had all the amenities we wanted. The large bedroom was spacious with a large closet and had a bed equivalent to an American queen. The smaller bedroom was still big enough for luggage and had some shelves and clothes hangers, and the bed was equivalent to an American double. The sofa bed was fully functional and very comfortable, and folded up easily during the day.
The flat was extremely close to several grocery stores and restaurants, and convenient to several tube stops. We found it easily walkable to the British Museum and other sights, as well.
The only issue we had was that the street was noisy at night, as it is near student housing for the nearby university, and the road was surprisingly busy early in the morning, so it was a little loud.
Liz was very accommodating to our schedule and requests and very nice and responsive to deal with. If you need anything, just ask her!
Overall our stay was fantastic and we would definitely recommend Liz and this property. If we are every traveling back to London, we would surely stay here again!