There's nothing more enjoyable than a day beside the sea. Round up the kids, pack a picnic and get out into the fresh air at Vagia Beach.
You'll have sightseeing choices galore when in Serifos. Vagia Beach is a great place to start here, but there are lots of other worthy spots to visit. Agios Sostis, Ganema Beach, and Kalógeros are not far from the stretch of coastline and will fill in your day nicely.