I think the term "villa" is a little misleading. They are like suites, but with a kitchen. The buildings look like hotels, the hallways are like hotels. It's just that the units are set up differently than regular hotel rooms. They still are quite nice 
The only thing that might not work for your party is can your daughter 9 & SIL share a sofa bed in the living room? The master BR has a king bed, and they don't have rollaways, so that leaves the nanny in the room with the triplets & 9yoDD & SIL on the LR sofa.
Have a great trip & good luck finding a deal! If you are flexible about your dates, maybe you can get something later in the summer.

The only thing that might not work for your party is can your daughter 9 & SIL share a sofa bed in the living room? The master BR has a king bed, and they don't have rollaways, so that leaves the nanny in the room with the triplets & 9yoDD & SIL on the LR sofa.
Have a great trip & good luck finding a deal! If you are flexible about your dates, maybe you can get something later in the summer.