What's onboard: The Emerald Princess holds 3,000 yet remains intimate. Most rooms have private balconies, and there are plenty of quiet nooks. You can also eat whenever and with whomever (as opposed to preset times and tables).
What's to see onshore: Indulge all your romantic fantasies in one trip: Gaze at Michelangelo's David in Florence, go through Venice by gondola, lie on the golden sand beaches of Mykonos. The trip is kind of a whirlwind (11 destinations in 12 nights) - but for some, that's part of the fun.
Alternatives: Other cruise lines that offer couple-friendly Mediterranean excursions: SeaDream, Silversea and Windstar.
NEXT: For families