My husband and I brought our toddler to Nantucket and we stayed at the Cottages. My parents also joined us for a few nights. Staying at the Cottages at Boat Basin was the best choice could have made. The location is perfect. It's right on the water and a stone's throw from the action on main street, children's beach, whaling museum, the grocery store, etc. It's about a 10 minute taxi drive from the airport. Also, there is a great restaurant/bar on the property called Slip 14 along with shops and so many beautiful boats to admire. We stayed in Meridian, which is a very family-friendly (bathtub, tons of open space to play, full kitchen with dishwasher, etc.) two-bedroom cottage on commercial wharf. It is the furthest wharf from the bars/restaurants/shops and is wonderfully calm and quiet. Each morning we watched the boats from our deck and fed the ducks. The staff at the Cottages is hardworking, friendly, and accommodating (especially Rosie!). The cottages themselves are well-maintained, clean, and charming. I cannot make enough wonderful comments about this place! My family and I will be back! Hopefully sooner than later.
My one recommendation would be to post detailed information and photos of each cottage so that people can make an informed decision on which cottage meets their needs. I had to dig around a bit to land on Meridian. I'm glad I did the research though; it worked out SO well.