Tim's place is great - really comfortable. There's also a washing machine, which is great if you've been on the road for a while. Being in the vibrant city centre, the traffic/people noise may bother some people when the window is open. It didn't bother us.
It is a really easy 8 minute to Marble Arch tube. There is a Tesco Metro supermarket 1 minute away. It's open until midnight!
We will definitely stay there next time we visit London.