To those of you looking for Club Carlson redemptions, here are my top four from personal stays:
The May Fair, London (class act, fab location & super comfortable beds)
Radisson Blu Bosphorus, Istanbul (Go for the business class room for more points and ask for a room facing the water. It includes a lovely breakfast buffet as well)
Radisson Blu Royal Hotel, Copenhagen (short walk from train station & across from Tivoli)
Radisson Plaza Resort Tahiti, Papeete (right on a black sand beach, good for short stay before longer Tahiti vacation)
EDIT: Just saw that the Tahiti property is no longer a Radisson, so nix that. Also saw that the Aruba property is on the market.