We stayed 2 weeks at Kobi. Everything was fine. The house is close to central London. A bus stop is at 5 minutes walk from the house. There are several bus lines open at all times. We used the Citymapper app to get bus and tubes timetable. Kobi was unfortunately not home during our stay (we were alone in the house) but he answered promptly by WhatsApp to our requests.
We would have liked to meet him and practice our English with him. Another time maybe.