Our family (from 8 to 80 years) had a great week - the house was spotlessly clean and was exactly as described - or even better! The owners were extremely helpful and their hospitality exceeded all our expectations.
I must admit, that at first I was wondering if a house in zone 4 of London underground might be too far away from the city center. - No need to worry. As central line trains come every 1-3 minutes you get to anywhere in the center within 45 minutes.
We could not have chosen any better home away from home. Many thanks to Josephine an Elaine!