Help me make a freakin' decision

Here are your choices:

1) Southern Italy.
Ravello, Sorrento, Positano. Maybe a bit of Puglia?
PROS: Nearby, parlo italiano, food.
CONS: Same old, same old?

2) Greek Islands.
Santorini, Aegina, Mykonos.
PROS: Gorgeous. Different. Mellow or ancient site-seeing filled.
CONS: Filled with honeymooners? Hard to get around tiny islands?

3) Croatia
Dubrovnik, Hvar, Zagreb.
PROS: Varied scenery: forests, beaches, historic buildings. Totally new.
CONS: Totally unknown.

It's just me, and I've got about 5 days. What do you think? Also open to other suggestions. Not particularly interested in Spain, for no reason I can really determine, but anything reasonably close to France/Italy would be acceptable. I've given brief thought to Prague, Vienna, and Turkey, for what it's worth.

HELP ME.