This is a great family choice. The apartments Marija are a very high standard with good air conditioning. You have access to the adjacent hotels pool (Sun beds 20 kuna each ) and bar for those drinks whilst you can watch your kids. Sea access also from hotel (for older children as you use a short ladder into the sea , like a swimming pool). However, Postira is a gem of a town: it’s not too busy, with good restaurants and well priced (not like expensive Bol on the other side of the island). Great local beaches in the town very kid friendly. If you have a car worth exploring the other local beaches also like at Splizka. The hotel staff are reasonably friendly, but I think they may resent the apartment people vs hotel guests. Bar staff English is poor and may come across as rude (but it is just their poor vocabulary). There is a local supermarket just down the road to get water and snacks. I would highly recommend staying here. You can have breakfast at hotel, but at 100 kuna a person, including the kids they are on another planet (it should be max 100 kuna for the adults), no worries we had a lovely breakfast each day bought from the local supermarket.