Anchor: just north of the harbour in 30 ft. over mud and weed, the holding is very good, and protection from 360 deg.
Ashore: there is a bus that takes you to the chora on top of the hill; very nice chora with the usual narrow street and old windmills being turned into modern dwellings. There is a great view looking over the bay from near the last church on the very top. You can walk back through marked pathways all the way down to the bay, it is a very nice relaxing walk.
New 'marina' construction, lazy lines against shore wall, drop anchor on outer wall. Slight wash from ferries, not enough to bother us. No charge for mooring, pay water man if needed, just a few euro. Butcher, bakery x2, supermarkets and the usual bars and restaurants. Walk to the town on the summit of Serifos, absolutely stunning views. Bit of a workout though!