thats the same question thet bothers me either...
I only have one hint: its not a 100% G spot but at least have a bit of open mindedness.
a spot is calling "Fjaka" (Fyaka) and its in some very narrow street in Kotor
( approximitely, a houre of ride from Herceg Novi) in Old City of Kotor .... you gonna find a huge bar an` people are spending more time in front of a place instead of inside ...
try 2 avoid places such as " Scorpio" or "Porto Bello" ....
wish you all best ...
enjoy your holiday ....
I`m sure thet I will