Join Date: May 2006
Location: New York, London, Sydney
Programs: United GS/2MM, DL*P, VS*G, AA*EXP, Avis CHM, Hertz Platinum, Sixt*D, HH*D, HGP*P, Starwood*P
Posts: 9,877
There are specific Centurion FHR rates for each property. They give the upgrade, and the free night. Only these rates (and the corresponding room types) are eligible for the free upgrade. You can usually get yourself into suites, but not into any special/unique suites.