The only complain my husband and I have is that Alessandro took a long time to answer our messages. Though he was five minutes late to meet us in front of the studio, he was really helpful and gave us a lot of attention in the reception. A really warm welcome, by the way: he gave us some snacks and drinks, and even a bottle of wine.
The studio has all you need, after all, you won't be there a lot (we spent a whole week with no rain!). The location in great, close to the tube and there is a very nice supermarket nearby.
The stairs are no problem, you get used to it.
We definitely would stay here again. Thanks, Alessandro!