I stayed at Kian's place for three days in February.
Pros - the house is pretty much across the road from Farringdon station, barely a 1 minute walk. If you're arriving from Heathrow, you just need to take the Piccadilly line to King's Cross and change for Circle or Hammersmith; one stop and you're home (the whole trip takes approximately 1 hour).
The building is situated in a populated area. Lots of coffee places and fast foods for a quick meal and people around at all times, even in the evening. Despite this and the two bars at the ground floor, the house is actually very quiet (I had no trouble sleeping at night).
As for the cons... I found that the room gets very hot during the day. I made a quick stop midday once, and the temperature was unbearable. Fortunately the temperature was fine in the evening and early morning.
Another thing to bear in mind is that there's no closet in the room; it wasn't a problem for me, but it could be if you're bringing a lot of clothes with you (there is, however, a coat rack on the back of the door with a handful of hangers).
All in all, I was satisfied with the room; it was quite exactly as described.