So I am looking for the first time at Stay Certificates to see if they can bring down the cost of a two-night stay at the PH Hamburg (EUR 285/night seems best rate I can find). And I am not quite sure I fully understand how they work. Looking at https://www.certificates.hyatt.com/products/CertsStay.aspx there are different "levels" at different prices. And looking at the table of participating properties, it seems that Hamburg accepts Inspire, Elite and Premier certificates. These are the prices for the certificates: Premier Level (US $185 per night) Elite Level (US $249 per night) Inspire Level (US $319 per night) Does that mean I can buy a Premier level stay certificate for $185 * 2 and get a room at the PH Hamburg? And do they accept the higher level because, well, someone might be silly enough to use one of those instead of the cheaper ones? (or more likely, receive one as a gift) Are rooms bookable with stay certificates capacity-controlled, or can I assume I can get one if a standard room is available?