A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,417
I've been told by Hyatt/HR managers that a large part of the brand standard for HR is the amount and type of meeting/function space. For example, a lounge isn't required and restaurant offerings can be fairly minimal.
IME GH tend to be larger hotels, including some huge convention properties (such as Manchester GH in San Diego, rebranded from HR). The GH lounges tend to be larger and better than HR on average. Obviously the signage, branding, and toiletries are different too.