Marble Arch was ok. It was a bit of a schlep from the Tube Station since the one nearest the hotel was closed. That was March. If they work like SEPTA then I would expect the station will be closed until the end of Tony Blair's term. I was using reward points, so I can't really complain. Room was a bit small.
There is a small slots parlor that pays off like mad just north of the hotel. Drop in a quid and see how it goes. And a couple of decent pubs and middle eastern joints are in the area.