My partner and I booked Roberta's place for a month, and we have to say it was a perfect home away from home.
At check in, there was a delay with our flight to London, and as a result, by the time we arrived to the house, we were extremely late. Roberta was an amazing host and communicated with us throughout the night so that her friend was able to meet us to walk us through the place.
The house was extremely spacious so that there was enough room for all our luggage, and well decorated so that it really felt like a home. One thing I loved was the amount of pots and pans provided in the kitchen - enough to be able to cook dinner comfortably most nights.
The house was on a quiet street, but still accessable to restaurants and bars along the main road, bus stops into inner London and the Overground station.
Whilst I never got to meet Roberta in person, she was always very responsive to my questions on Whatsapp. I would definitely recommend Roberta's place to my friends and family if they came to London.