Fluffster, there's only one Hampton in Costa Rica and it is the only Hilton member, or at least was when I went in Feb. It's great like I said in my review but you wouldn't want to stay there except on arrival and departure day.
If you want to stay in town instead, I can recommend a nice, quiet little place called the Hotel Del Rey. $55 a night plus the tourism tax of about 14%. It is near the Parque Morazón. Another good place is the Park Hotel. The Park Hotel has a great variety show on Fridays and Saturdays.
Doakes