Lanzarote is gorgeous. One of the nicest spots for package holidays -I have been twice. It is hot all year round but the nights can be cool
outside the summer months so bring a jumper in Oct.
Regarding resorts it depends on what sort of person you are. If you are single or a young couple looking of a more lively holiday I would go to Peurto Del Carmen. If you have a family or are looking for a quiet holiday Matagorda is the place. Some nice places to stay there are Hotel Beatrix Plaza,Sol Lanzarote apartments , Falcon Villas. Everywhere is of a good standard and the island itself is beautiful. It is very eay to drive around and well worth hiring a car as there is so many great places to see.
Some places to go and see are Jameos del Agua , the caves and the Caeser Manrique foundation.