Water is clear and beautiful. Can get choppy with the wind. Some little waves can form, depending on the shape of the sand bar below. Shallow out about 25 meters at low tide, then gradually deeper.
The beach is decently wide and very long with little interruption! Soft sand. Some trees and palapas strewn about. Mostly safe - but always look for people/obstacles. Kiteboarding is still pretty rare in Cuba, so you'll draw quite a crowd.
Very tropical weather. Winter may require shorty or full wetsuit if cold front. In spring a heat seeker is sufficient. Summer can be very hot and buggy.
Winter winds are usually best, December to March, but according to locals it can be quite good beginning in October. You may get thermals in the afternoon. Be careful of hurricane season, June 1st to November 30th., it brings wind, but sometimes dangerous and worse.
International flights from many European, Caribbean and South American cities. Also within Cuba, from Havana, for example (but its better to drive from Havana). Easiest to fly to Varadero, but you can arrive to Havana and drive, as well. Taxis are available from the airport.
None. Be nice and considerate. The further out on the peninsula you go, the more all-inclusive resorts you'll find, which means more people. 53rd street is closer to the center of Varadero, but the beach is not as popular.
Lots of places to dance, drink, socialize. A lot of the nightlife you'll find is at the all-inclusive resorts. The `espectacular` shows are very popular and start around 11pm. Lots of restaurants on the beach and around Varadero.