We had a perfect stay. The family is very friendly and we felt comfortable staying at their place. Everything is beautiful and stylish and the room and bathroom is very clean. It's a nice area and when you check the train / bus departure times before leaving, it's only a few minutes to London bridge.
The family also helped us with recommendations for nice places.
It's not completely dark during night, so you might bring a sleeping mask if you're sensitive to light as I am ;). But their is a normal roller blind, so should be good for most people.
We, my friend and I, would like to visit again!