If you're flying in/out of Stansted and are looking for a medium between the airport and Central London, Daniel's apartment is perfect! The apartment itself is very tidy, spacious and modern. The amenities offered are great as well. Daniel is an excellent host and does a great job of making you feel at home.
The apartment is by the Tottenham Hale line (5 minute walk) for the Underground which can get you into the main parts of London within 20 minutes or so. The Stansted express also runs from there and can get you to the airport in 40 minutes.
Overall, a wonderful experience and I hope to come back to London and stay here again!