Looking for suggestions for a points stay (5-6 nights) in late-August for a couple with platinum status. Main priorities are seeing a couple of shows, a day-trip to Oxford by train, and generally experiencing the city. Beyond that, we’ll base our plans on what is reasonable given our location.

We know August is busy, so we don't expect an upgrade. Good King bed is a must. Lounge/ good breakfast is a big plus. Some options we are considering based on points cost:

Westin London City: King Signature
Sheraton Grand Park Lane: King Deluxe
Marriott Grosvenor Square: King Deluxe
JW Grosvenor House: King Signature
St Pancras Renaissance: King Deluxe Barlow
Autograph Montcalm Mayfair: Atelier King City View

Any suggestions to help us prioritize/ narrow down the options? Have we missed somewhere that is typically good value that we should consider?