STAY AWAY! really...
I've used AirBnb a lot but I never enconter with a host like Les.
1.
The host has develop a "nice" method to "force" people positive reviews. He ask everyone for 40 pounds deposit as cleaning fee and when you are about to leave his place, he came and evaluates the place and said " "you have not vacuumed"!! I politely explain to him that as visitors we are not suppose to vacuumed while we are on vacation.
2.
The water in the TOILET rarely flash! and the host told us to take a Pot and spill water to the toilet. The host said that a plumber "didn't find any problem"...so why did he tell us to use a Pot?

3.
His place is so crowded that you can not move... a few minuets before we left the place, my wife broke a small ventilator, accidentally. So when the host asked 10 pounds for cleaning I told him that I agree that he can keep 10 pounds for the broken fan that maybe worth $5 although the toilet was not working well.

4.
Since I left London,the host decided apparently that *threaten* me into a positive review will work, so he wrote me an email that he will contact Airbnb about the fan if I will not write him a positive review. I was and still socked by this email and the threats that was made on me.

In short - STAY AWAY!