The place is very nice, the apartment is clean and comfortable, the view in wonderful. The location is central, the area immediately surrounding the apartment is not very exciting but after few steps you are in London Bridge, and there is a bus stop in front of the building and a tube station closeby.
Rex is a nice and kind host, he was flexible with the check in and check out times. The communication with him was ok though he can improve a little in this aspect: in some occasions he has not replied to me promptly (e.g., I had to wait a little for the check in, he was not expecting me for that time though I sent him a couple of text messages and I tried to call him).

My overall experience was definitely positive!