I absolutely cannot recommend Nicholas's apartment enough! I came to London to finish some research, and this was the perfect apartment to stay in. For researchers - it's about a 25 minute walk to the National Archives at Kew, as well as numerous cafes. For those who like to exercise - it's a less than a mile to get to the Thames Path (a beautiful, miles-long riverside path) and just about a mile to Richmond Park (a massive park full of running, walking, and cycling paths, as well as about 600 wild, antlered deer). For sightseers shoppers - the apartment is located very close to a train station that goes straight to Waterloo (the London Eye), and for shoppers - it's in a fairly wealthy neighborhood, so the secondhand shops are to die for.
The room itself was a little bigger than the pictures made it look, and much brighter. The kitchen island is a good place to sit and work with a cup of tea, and the living room is full of squishy couches and good travel books.
Nicholas himself was an absolutely awesome host - my first day, he let me come with him on a bike ride that was the perfect introduction to the area (we biked along the Thames and then through Richmond and Richmond Park). He also knows a ton about London. I tried not to ask too many questions, but he was always super helpful with information about getting around, places to eat, and things to do.