OK, I will take a look, for the locations only

London is BIG - so you need to tell me what you plan to do in London before I can rec a location.

We were in London early Sept. but we stayed at Marriott Grosvenor House for 2 nights and then Holiday Inn Mayfair for 2 nights - all on pts.

Both hotels are at the Park Lane/May Fair district - about as convenient (and classy) as you can get for visitors.