I recently stayed at the Tremont Hotel (paid rate, Hot Escapes) to take advantage of a targeted promotion: 1 stay gets you a free night. I called a few days afterwards after I noticed that it showed up as "redeem" and that I got no points/no stay credit. I called up SPG and they told me that this is a nonparticipating property (although I see no evidence of it on the web). They said that if I had called to put in the reservation they would have told me that. I've been seeing conflicting information on whether the hotel participates in SPG (for example, I know that in 2011 it did, but I haven't seen much either way since). Is it a participating hotel, and is this is a case of HUACA (hang up and call again)? On a side note, is there a comprehensive listing of properties that participate in SPG? Thanks!