We had an amazing time in Serifos: the place is quiet, on the edge of the village, with stunning views that make you want to stay on the balcony for the whole day! The weather was still warm (though with strong winds), so we swam everyday, going down to various beaches walking. Psili Ammos (about 1h15 walk, using nice paths) was a favourite. One of its tavernas was still open and served delicious food. Livadakia, Livadi's beach, was also lovely, and slightly closer walking. We even walked as far as Sykamia in the north (about 5h walk), amazing views along the way.
The flat is tastefully decorated, simple, with everything one needs. It is 5mins walk from a couple of shops and cafes, and even a bakery that smells of spices and sesame.
Chora is about 45 mins walk from the harbour, and a great base to explore the island, with sweeping views and tiny white winding streets full of cats!
A gem... And a good time to visit as beaches were empty.