I've just done a search and came across this but it was on a post that was over a year old. Can anyone confirm if this is still the correct address and number for the GS:
Carretera Federal Cancún-Tulum, Zona Costera, Km. 256.3 - Akumal - Quintana Roo - 77710
Tel. + 52 984 875 1700
Fax: +52 984 875 1701
FYI, I don't usually bother much about this sort of thing but we're leaving my 13 year old son behind this trip and I know his grandparents will feel more comfortable if I can leave this info with them. (Of course, how successful they'd be using these numbers to get a message through to us in an emergency would be anyone's guess!!!!)
Thanks very much for any help y'all can give.