I've just been to view it, and I really liked it. It has a lot of light coming in, and the rooms are all a fairly generous size.
I'd be buying it with a sibling (if we did decide to buy it), and there is a possibility of renting out the third bedroom on Airbnb, for example.
Nigella the service charge is £1800 per year. This includes heating and hot water, but not electricity or the Internet.
It's really peaceful and quiet as well, which I liked, and very secure. There is a locked gate at the entrance to the courtyard, and another door with a code on to enter the building itself, and the door to the flat is sturdy and double-locked.
It does look a bit grim when you walk into the building itself (the stairwell is concrete etc) but the owner of the block of flats (not the council, but a private owner) has already paid for redecoration works to the block.
I was pretty impressed with it as an ex-council property to be honest. And it's around 6 minutes' walk from Kentish Town road and Kentish Town station (Thameslink and Northern Line).