I really enjoyed my stay (3 weeks) at Alvin's place. I will stay again with them when I am back in London and looking for my own place.
You are staying with Alvin and his wife with whom you share the bathroom and the kitchen. Both of them are very kind and extremely welcoming - they even took care of my dinner on the first evening when all shops were closed. I always felt that I could join them in the living room in the evenings.
The room is rather small but well equipped with bed, desk (not on the pictures), dresser, and wardrobe. The window is towards a mildly busy street, which might be a problem during the night. When working from home, I did not mind too much as the street noise provided a nice background sound.
The kitchen is very well equipped, and you are free to use the equipment for preparing your meals. If you are lucky, you are even treated to dinner or lunch or some snack in the afternoon.
The location of the flat is great; it is a 5 min walk away from the Northern line (Mornington Crescent) and a good 10min walk away from Kings Cross. If you are coming from Heathrow, I do recommend taking the Picadilly line to Kings Cross and walking the last bit as changing from Picadilly line to Northern line at Leicester Square involves several stairs (as well as your end station Mornington Crescent). The canal is only 5 min away and Camden Market less than 10 min. Very close to the flat is a Santander bike-for-hire station which is very convenient to get around London without using the tube.
Thank you Alvin for the very nice stay and see you soon!