Castro Hotel Syros

Eight rooms occupy a restored Cycladic mansion in Ano Syros, the medieval Catholic quarter crowning the island's northern hill above the neoclassical capital Ermoupoli. Stone-vaulted ceilings and hardwood floors anchor each room while Jacuzzi baths and a full spa sit within the same compact footprint.

The terrace and sun deck face west across the Aegean; breakfast arrives in-room or can be collected to go. A Turkish steam bath, massage menu, and spa lounge make the property function well above its eight-room scale, with a bar and snack service keeping guests from having to descend the hill every evening.

Ano Syros sits a ten-minute uphill walk or short taxi from Ermoupoli's ferry port — close enough for day access to the island's main tavernas and market, quiet enough that nights here are genuinely silent.