Yes, the Sticky one.

Relatively few Priority Club promos are property specific. Thus you've seaching for the wrong thing. You don't want promos that are specific to Candlewood / Staybridge, you want promos that work at all properties, like Welcome Back Bonuses, the 6x bonus (3x points on your first stay, 6x points on your second stay, then it's over, so time your stays well!), the double double-points points bonuses, etc. Obviously, at Candlewood & Staybridge you'll earn half as much on "double"/etc bonuses because you earn half as many points to begin with. So you have to do some math to see if it's even worth it. If your stays are short (1 night?) and cheap, and you collect with a "flat" earning airline like Southwest (.5 credit no matter how short or cheap the stay) or BA (500 BA miles no matter how short or cheap the stay) that may work out better for you. But certainly on longer and/or more expensive stays the points can work out better, especially if you can "stack" several bonuses.