Florianopolis is great! I recommend you make accomidations somewhere for about 2-3 days and spend that time finding somewhere else to stay. Booking online is so much more expensive than once you get there… Campeche beach is quiet and fun, Lagoa Connection has a bus station that makes it easy to go everywhere so I like it. Praia Mole is a fun surfer beach with drinks and food. I live in floripa 3 months every year (summer)