we had a great time in london at Greg's flat, the flat is conveniently located 5 min walk from Oval metro station, it has just been nicely renovated and has all the comforts. It's been nice using the comfortable kitchen for breakfast and spending some restful evenings in the couches in the living room. From the flat you can walk towards the thames and reach it in 15-20 minutes. Greg was always available and replied well to all our requests, definetely would suggest this to my best friends.