Need to stay at a hotel, few days from now that has a room with a kitchen and parking while we wait to close on our home. The Hampton inn is the closest one that has room with kitchen but they cost so many points a night that I don't have enough points to cover for more then few days.
If I book with cash, with my card, is there any way to save like a code or something? The hotel wouldn't upgrade me to king suite with kitchen from the standard room without kitchen. I know they don't have to. I am a diamond member. Any codes, tips or tricks to save on cash booking?

Thanks a lot!