I rented with Thrifty in MSP last week, and everything went fine. They are even located right in the Bloomington Doubletree, which is IMO a better hotel than the Hilton that is just up the street. (I stayed at Doubletree last year, but wanted to try the Hilton. Had reservations for 12/16 and 12/19, but cancelled the 12/19 to return to the Doubletree.)
Very convenient if you are in HHonors and in MSP.
-KP