Have stayed a several Cambrias. All have been new builds within the last five years or so. Rooms are mostly junior suites with a semi divided bed room, though there do appear to be a few proper suites at most properties. It does appear they are tinkering with F&B offerings though as I have seen slightly different offerings at different properties.
I have gotten a few upgrades to full suites, but since the majority of the room inventory is identical, that's not going to be frequent. At best expect a bottle of water if you are elite.
While I do think they compare favorably with HJI and Courtyard, the free breakfast at HGI for elites is a perk I wish they would emulate.
Cheers.