Hi,
I had to book this hotel trough AMEX travel (for the same price as on the Hilton homepage).
HHonors website does not recognize booking number, however I was given a Sabre PNR from Amex.

Is this stay eligible for Hilton Gold benefits (GDS booking?) ?
How generous is this property with 3rd party bookings, does anybody have an experience?

Thanks for your help!