The good:
The neighborhood is nice and quite. You have a couple of parks, streets to have food, drinks and fun. I was there in summer so people were on the parks, streets enjoying the weather. A canal runs close by and you can seat there and have nice moments. The connection with public transportation is great. The closest bus station is the bus number 236, just two minutes walk. The closest Underground is like 10-12 minutes. The room I rented is small, for one or two persons is acceptable. The bed is comfortable, place clean, TV, fan, heating, back street is not loud. You have bathroom, shower and kitchen all to share with 6 other people the most because the host have 3 rooms to rent, every for not more than 2 people per Room. Host lives there as well.
The host is nice and friendly. You will not wait long waiting for an answer. Check in ist quit and easy.
The bad:
The place is like 2 hours ride by public transportation fron Heathrow International Airport. By the route I took I had to change two times. So If you intend to be close to city center (40 minutes ride to Piccadilly Circus) this place may not be your best option. The house itself though nice is loud. You hear the conversations of the other guests even if these are talking normally (not screaming) and for a non early-bird like myself, that is not good.
Neutral:
Check out must be at 12 the latest. You can still use the kitchen for a while after that and leave your stuff there.
Foot note:
I personally would not rent this place again just and only for the fact that is far. The loud conversations were not good for me, but not really an issue for me for not renting a room there anymore.