If you are looking for a good party location, then I recommend Lloret del Mar in Spain!
I really liked to stay there because everyday the whole day was a party! The hotel Santa Marta was located very well because it was a short walk to all the bars, clubs and restaurants.
Besides that, the hotel was clean and had comfortable beds, which was really important to me!!
So, if you like to party, I advise you to go there!