Originally Posted by LA2CDG

I was in london 10 days ago and walked by the following hotels:
- Grosvenor House, A JW Marriott Hotel
- London Marriott Hotel Marble Arch  
Both are very nice and great location, walking distance to a lot of attractions.

for something hipper, a friend recently stayed at the The London EDITION, it's an Ian Shraeger Hotel. Cool neighborhood.
Highly recommend Stef's Italian Kitchen a few doors down.

You can't go wrong with any of them.