I had a great stay at Sam & Andrea's place. I took a last minute trip to London, and they were great to accept a last minute booking. They even let me come by early in the morning after my flight landed and drop off my bags even though the room wasn't ready.
The room is cozy, with a large wardrobe for hanging clothes and a very comfortable bed. The flat also has a nice bathroom with a big shower with powerful rainshower head. The wifi is fast, which made it easy to do some work in the evenings.
The location is about a 10-15 minute walk to the nearest Underground station with Northern Line access, or about a 20 minute bus ride to King's Cross Station with access to numerous rail lines. It's on a quiet street, but a short walk to the high street or Camden Market where there's lots of restaurants & shopping.
I will note that while the listing advertises that it includes amenities like the kitchen and cable TV, guests don't really have access to them. The guidebook provided in the room states that the kitchen can't be used for food preparation after 8:00 a.m. and that the living room is off-limits to guests. This wasn't a problem for me as I didn't need access to these areas, but I wanted to share this if anyone would want to use those areas as a guest.
Overall, Sam & Andrea's place is wonderful and they are great hosts. I came down with a nasty cough on my trip and they were nice enough to offer me some cough medicine. Would definitely stay here again.