I spent 2 nights at Alisons place and I was totally happy with the experience. Although I only met Alison on my last day, her partner met me initially and made me feel very welcome.
The house is very handy to the tube (10 min walk) and very close to buses.
The house and bedroom was just as described except that I would say the bed was MUCH more comfortable than I anticipated. I had a wonderful nights sleep and after long days walking around London that bed was Heaven :)
Fantastic value for money and I would definately not hesitate to stay there again next time I'm in London.
Thanks so much