Unfortunately I could not recommend this Airbnb to other people.
I'll start by saying the good things. The photos do represent the interior of the flat well enough, and the flat is in a good location. So if all you are looking for is a bed and a decent area, then you should be fine. However, if you are expecting more than that then I am afraid you will be disappointed.
I had next to no communication from William. The Internet simply did not work. Many of the things listed as being in the flat simply are not there (washer, hot tub, shampoo, microwave and other essentials) and some things that I wouldn't even have thought to ask about simply weren't there (mainly toilet roll).
This Airbnb should be great. We thought we had found a real gem. However, it fell well short of our expectations. I could not, and would not, recommend it.