Hyatt suite upgrades (and suite award nights) book into the "entry level suite" at the properties - these suites can vary widely - some properties have entry suites that are small and a few play games (not that many from reports). There have been reports that the suite upgrades confirmed weren't necessarily true suites. Recommendation would be to ask when confirming what suite (and a brief description) you're getting, so you can not use the suite upgrade if it's "not worth it".