On a quiet end of SoFi (the area south of 5th St, South Beach), this massive multilingual hostel has a happening common area and spartan rooms. The staff are friendly and the on-site bar (open to 5am) is a great spot to meet other travelers. Free breakfasts and dinners are included in the rates.
There are loads of activities on offer – from volleyball games to mojito-making nights, screenings of big games and bar crawls.