I came from Gatwick so my opinion may be different from others. I found Mehul's place ideally situated between the airport and central London. The Crystal Palace area is worth a stay. There are several good places to eat and drink, including Blackbird Bakery and The White Hart. I had my choice of buses or trains for cental L. access. The area seems very safe even after dark.
Mehul is a great host. He offers excellent conversation yet is quite discreet if you want privacy. He knows the area very well since he has been a Londoner for most of his life.
The room is perfect for solo travelers. I particularly enjoyed the morning view. The bathroom is excellent! The flat is very tranquil.
This should be a must stay!