Hi, Alberto!
Wow you have a tough choice! Let me tell you a bit about each resort:
Art of Animation is brand new and has been getting great reviews from guests. You will have sleeping space for 6 as well as a kitchenette. You only have 1 bus stop which is nice, and there is a huge traditional food court area.
Coronado Springs is a lovely resort, and each room has 2 super cozy queen beds or 1 king bed depending on what you book. Each room has a mini refrigerator. The resort is large, has multiple pools, and the largest hot tub on property. This resort has several restaurants and lounges, including my favorite the Pepper Market which is quick service, but also offers buffets and stations with unique dining selections.
Personally, I would opt for
Coronado Springs. I like the queen beds and the nice walking path around Lago Dorado (a beautiful lake in the center of the resort). Now, while this is my choice, I am guessing you would get other answers from different panelists who would go for the Art of Animation, so it really is up to you on what you are looking for. For a fun, family location, and the opportunity to see a new resort, go for AoA. For a more upscale atmosphere, go for Coronado Springs. The choice is up to you and certainly not an easy one. Good luck!