Plaza on the river is best redemption. Often have good cash and points. Often get an upgrade.

Mayfair is ok but full of d list celebs. Basic toiletries. Get a room onto inside as quieter.

County hall is my work hotel. I prefer it to Westminster (same owners) but upgrades are now almost non existent. If you redeem get same room small which smells of damp as faulty bath.

If I was redeeming plaza on river, then Mayfair, then County hall.