I stayed in this property for 1 week with my wife, my son, and my parents. Everything was exactly as described in Internet. It was very cleaned and tidy.
The flat is extremely comfortable and cozy. You feel at home as you enter there. Wi-fi is also a great thing. And more, LCD TV, washing machine, coffee machine with some capsules offered at our arrival, tea in the pantry, many detergents, iron and iron board, etc. etc.
The stairs are the only sore point of this apartment. They are very narrow and steep. But since it's an old style building, it's comprehensible.
Islington area is beautiful and very well linked by metro and buses with city center. We have had no problem to move from home to any destination in London. Upper Street is full of restaurants, pubs and useful shops. The most important, the 24h shop right under the house.
Finally Paulo and his team (Anita and John) are very efficient and friendly. They are serious and professional, and it's noticeable since the beginning, when you ask for availability and contact them.
If I go another time to London, I have no doubts about where to stay.