The house was well kept and the room we stayed in was tidy and clean. There were a lot of superfluous rules that seemed unnecessary to me. Lewisham is also NOT close to central London and while you can take a train (and two tube stops) it is not quick or convenient.
I can't comment on the host at all because he wasn't there during our stay. His neighbor Maria, who was very friendly came by and welcomed us in which was nice. To be honest though, it would have been nice to have been welcomed by or at least have been able to meet our host.
All in all I'd say this place is okay for a night, maybe two but the amount of rules and lack of interaction with our host would not make me feel confident in recommending this airbnb location for any significant amount of time to anyone.