Absolutely loved staying in Elena and Dan's garden room - actually a beautifully appointed cabin across the garden from their flat. Everything you need is provided and they were very thoughtful hosts. The bed was extremely comfortable and with the bi-folding doors it was delightful sleeping with them wide open feeling totally secure, waking to birdsong in London.
Their dog Dinky is a great character and if you throw a toy for him he'll be your friend for the whole of your stay.
I thoroughly recommend this place for anyone wanting to stay in the area, pretty convenient for the Olympic Park and less than 5 minutes walk from lots of bus routes and an overground station. Good cafes and pubs in easier reach too.