Catia and her family (husband and daughter) were friendly and gracious hosts. They all travel a lot so I didn't get to know them as much as I would have liked to but I always enjoyed our brief encounters. Catia is very easy to get ahold of and answers queries very promptly.
Their place is in an ideal location in South London and just a few minutes from the London Trams which gives you quick access to Central London and the national rail service to other parts of greater London.
The only minor issue I encountered was a bit of a bug problem (spiders and some sort of fruit fly) but that can hopefully be treated fairly easily.
All in all, the combination of the location and the price made this accommodation the perfect stay for my two months in London. I highly recommend it to all travelers, both long-stays and short-stays.