KSSS Gästhamn Telegrafholmen

Run by KSSS (Royal Swedish Yacht Club), this guest marina sits on the northern side of Telegrafholmen, a small island just north of the buzzing village of Sandhamn. You'll find around 80 berths on floating pontoon docks, open from May through September, with Sandhamn's shops, restaurants, and famous summer scene just a short dinghy ride or swim away. The swimming here is genuinely great — the surrounding Stockholm archipelago water is clean and the setting is hard to beat.