I stayed here overnight for a course whilst in London and it was decent! The price was very cheap especially for London! The nearest tube stop is Manor House (which straddles Zones 2 & 3) and the hotel itself is opposite Finsbury Park.
At Check-in, I was given the incorrect room (although it was a computer error, rather than human error!) but the lady behind the desk fixed it quickly and it did not impact on my stay at all. The room itself is very small, but with all the amenities you'd expect - tea & coffee facilities, shower, bathroom etc - but with the small size of the room, it does feel very cramped, especially if you're a couple! Also, if your room faces the Seven Sisters Road, there will be a lot of noise as it's a very busy road! Breakfast was available onsite - continental was free, but it was £10 each if you wanted cooked breakfast - the selection seemed to be plentiful, although as I got there a bit late, there wasn't a huge amount left! Check-out was very smooth.
All-in-all, a good choice if you're looking for a cheap hotel that has all that you need, despite my slight gripes! less