This refurbished ship underwent a complete overhaul in 2013; the Serenity boasts a number of interesting lounges and restaurants and the smaller size of the ship allows ports that are often unvisited by cruise ships. The senior single cruise to the Western Mediterranean is not to be missed! Traveling from Barcelona to Athens in August, the cost of this cruise starts at $6,256. Senior singles enjoy this itinerary due to the many major cities that it visits such as Monte Carlo, Rome, the region of Tuscany, and Provence. This is a great option for singles that want to meet other seniors but are not interested in a lot of organized and potentially embarrassing "get to know you" activities.