Zalan is a very nice man.
Our bus to London delayed about 2hours. So we arrived late at London. But He helped us to get to his house with instant detailed messages.
And He gave us must-go places in London.
The house located in zone 3. It takes less than 1 hour to go to sightseeing places. It is better to buy a oyster card and use bus and train. It does not charge over £7.60 a day. (Train £2.60~, bus £1.50, no discount for tranfer)
We stayed in a living room. It was clean and we had pretty much privacy.

The air bed was ... the air bed. It was good enough to sleep for 2people.

Zalan let us have coffee, white bread and use laundry.