Apollonia's central square, Plateia Iroon (which locals simply call the Plateia or Stavri), is the main bus stop for the island. Buses run regularly to and from the port at Kamares, north to Artemonas and Cheronisso, east to Kastro, and south to Faros, Platis Yialos, and Vathi. Pick up a schedule at Aegean Thesaurus Travel.
By Car & Moped
Many visitors come to Sifnos for the wonderful hiking and mountain trails, but still want the convenience of a car or motorcycle. Reliable agencies include Aegean Thesaurus (tel. 22840/33-151), in Apollonia and Proto Moto Car (tel. 22840/33-792; www.protomotocar.gr), with a quayside office in Kamares and offices in Apollonia and Plati Yialos. In high season, you should reserve ahead. As always, exercise caution if you decide to rent a car or moped; many drivers, like you, will be unfamiliar with the island roads. The daily rate for an economy car with full insurance is from 30€; a moped rents from 20€.
Apollonia's main square is the island's primary taxi stand. There are about 10 taxis on the island, each privately owned, so you'll have to get their mobile phone numbers available at travel agents. Most hotels, restaurants, and shops will call a taxi for you; offer to pay for the call.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.