What are some cool things to do in Barcelona for college students?

My friends and I are going to Barcelona over spring break. I know we're going to the beach and going out at night. Where are some cool places that we should check out? Also where is a good place to stay while we are there?

Wow. Where to start? Lets see anything GaudÃ* starting with La Sagrada Familia, then Parque Güell. Las Rambas. The Gothic District. The Cathedral (they dance outside on Sunday). Picasso museum. The Olympic Park. Miró museum. A short day trip is Monserrat (absolutely incredible view -- if there's no smog), ride the cable car.

I remember that there is a harbor known as the Olympic Harbour built for the Olympic games, where there are a ton of restaurants and nightclubs... There's a lot of restaurants and nightclubs on the Ramblas as well.

Sorry I can't help you with Hotel info. It was a few years ago that we went.