Angie, I would still book the Del Mar.
It is hard because I never saw a room from the Del Mar. The down side to having access to all the restaurants is you are on a time schedule for dinner. It was difficult to get a 7 P. M. time slot. Only had it once, one at 8:30 the rest were 6. After getting home I realized it would have been nice just to go eat whenever! Our room at the Lindo was beautiful, and very nice. We ate Breakfast everyday on the Del mar/ Beaches side. Went for lunch once at the Lindo restaurant by the pool decided to go up to the lunch buffet where they have the Italian dinner. Much nicer. I agree about the Del mar / beaches side is just more beautiful. I never steped foot in the Lindo pool outside of the lazy lazy river. It was a wonderful vacation!