I also love the convenience of renting a car. I'm not into touring but I like to go up to the high rise section where you are staying (i stay in the low rise area) or run to the supermarket when I want to. Instead of renting a car for a week, you might want to rent for a few days. Check out the local newspapers for 3 day car rentals. Also, Arubus, the public bus system is a safe and cheap way to travel ($1.30 one way, $2.30 round trip).

3 weeks in Aruba Dec. 16, '08 - Jan. 9, '09
Aruba since 1985