I wanted to elaborate on the breakfast. If it's like the one they serve at the I-Drive location (and I assume that it is), it's really something. They have a well stocked hot breakfast buffet and, in addition to that, you can have anything else you want cooked to order (I had a ham and cheese omelet every morning along with french toast). The breakfast will really cut down on food costs if your family members are breakfast eaters (we are). We ate a very late lunch each day and snacked in the evenings (the fridge and microwave were very handy).
We have stayed a lot of places in Orlando (including renting houses, which we love), and we were very pleased with Embassy Suites. Again, we stayed at the I-Drive Convention Center location, but I suspect they are very much alike.