The apartment is just as described, well equipped (loads of cupboard space), quiet and convenient for buses, the Underground and for Finsbury Park itself. There is now also a massive M&S Food Store at the station (it opened while we were there) and the area abounds in restaurants to visit or to call for delivered meals.
There was a slight issue at check-in because the cleaning lady had not left the keys, but Michael was there in 5 minutes to apologise, explain and let us in. We would thoroughly recommend this apartment as a base from which to explore London.