Where are the best hotels to stay in Puerto del Carmen, self catered and on a budget!? Also, does anyone recomend any good activities or places to visit? and on average how much does it cost to do these activities e.g. scuba diving, snorkelling, catamerans etc?

download this guide book. its pretty handy for giving an idea on places to eat, trips etc.
http://www.lanzaroteguidebook.com/LanzaroteGuidebook-Iss15-web.pdf

excellent guide book, found some more things to add to the list of stuff to do.
roll on the hols!!!!!!!!!!!