Medellin, Colombia. I dreamt of going there since middle school when learnt it was called the city of spring. It indeed is beautiful, even though I wasn't lucky to see its famous lighting storms. What's more, it is very secure and has this vibe of community, you know. You can see people gathering to sing, dance and celebrate every evening; most cafes have live music etc.
Austin, Texas. Went there for a conference from AssignmentExpert.com. Just the right amount of chaos for me:)
Kyiv, Ukraine. Cheap, nice, people are great, cuisine is tasty. Yes, they lack a lot in terms of economical benefits and personal safety (though the only issue I personally observed is the necessity to watch your pockets in crowded areas), but I just like it there.