Yonathan's place was a great find for a weekend in the capital. The house is much bigger on the inside than it appears, with plenty of room for five people to stay! The lounge/diner is very spacious and the three bedrooms all very generous. The house is located on a very quiet residential street, with no main road or train noise - perfect for London since often it is such a noisy place to stay! It was welcome after spending the daytime in the capital.
The wifi is good, as is the shower and the kitchen is very well equipped!
We also enjoyed the access to Horton Country Park during the weekend, which made for a nice place for a run in the morning before heading into the city! The weekend that we stayed there were rail strikes, so the easiest way into the centre of London was to drive to Wimbledon, park at Morrisons (£2 per hour) and get the air-conditioned District Line into town. Worked well, and would recommend this route regardless of strikes as it is quite good value for a group.
Only little thing, is that the pavement leading to the driveway has a hump that some cars may not be able to get over. My friend's medium car couldn't get onto the driveway without scraping the bottom, however we were visited by some other friends who had a small city car that got on with no problem at all. May depend on ground clearance!
Other than that, I would thoroughly recommend Yonathan's place for a group stay in London!