We loved our time in Barcelona, in huge part due to Francesca's flat. It was spacious, clean, comfortable, and in a fantastic spot in the city - overlooking the gothic quarter. It had all the amenities we needed, which was important since we were on the latter end of a month-long trip of Europe.
Francesca does live there, but she goes out of her way to make you feel as comfortable as possible. She also really respects privacy. We were there 5 days and only saw her briefly twice. She is very pleasant to talk to and absolutely loves the city.
Francesca is also flexible and easy to communicate with. A truly reasonable host.
I would recommend her flat to anyone visiting Barcelona.