Simon's place is exacly as described here.
Although not located on the city centre itself, there is an underground station just 5 minutes away which provides quick (30mins) connections to central London.
The area where it's located is quite silent and calm for it's a residencial area. Ideal for those wanting to be a bit away from the busy and noisy central London.
The apartment itself is awesome. Enough space for 2 people to stay rather comfortably.
Kitchen with all the amenities and modern. Bathroom well illuminated, clean and again modern.
Didn't have any problems at all during my one-week stay there, from check in to check out, and would definitely stay there again.