Excellent small accommodation for someone who’s in London for a short while. Location is very convenient (Z1) and walkable distance from most major transport facilities.
The staircase is a bit difficult especially if you have heavy luggage, though to be fair, I did read about it and still chose it because location was important for the work I had.
Kannell is a prompt and courteous host and is always just a call or text away.
Bathrooms were clean and well maintained.
I would recommend this place for short stays.