We had a perfect stay in Julia & Seb's house. We stayed 4 nights with our 3 kids. They loved to play with the toys and didn't even asked once to watch TV :-)
Great location near Subway, fast and helpful communication from the owners and not to forget : their nice and useful tips. Our luck was that Maximo Pizza was on holiday and so we discovered the Mercato Metropolitano (http://www.mercatometropolitano.co.uk/ ) - the walhalla for streetfoodlovers. Don't miss it !
We left London in a very good mood thnx to Seb & Julia.