I can't recommend Walter's place enough. Walter and his partner are great people and always went out of their ways to make our stay easier. They're easy going and really warm people.
The flat itself is also fantastic. It's extremely well located, with views to the river and fantastic local options to go out. The bed is comfortable and we had our own tv with Netflix on it. Also, it's very easy to go to the main attractions in London from there.
Thank you so much guys!!