Without a doubt the hottest spot to be seen on sultry summer nights is Flò, a glitzy lounge bar that pops up each May on Piazzale Michelangelo. Different themed lounge areas include a dance floor and VIP area (where you have no chance of reserving a table – €18 per head – unless you're in the Florentine in-crowd).
Dress the part to get past the bouncers.