Monastiri is located to the east side of the island. It is a quiet, organised beach with clear waters and picturesque tavernas. It is under the hill that lies Monastiri, next to pine trees and luxurious hotels. Monastiri is offered for water sports and underwater diving. It is located to the road next to the port, after Askeli and it has got transportation with the town of Poros with buses, taxi and boats. On the right side of the beach there is the hotel Seirina - A' class.
As Poros town is built on a small peninsula surrounded by quays, along the south and northwest sides, the harbour provides excellent shelter all year round. The closest airport to Poros island is the International Airport of Athens (IATA: ATH) and from the airport or the city centre, visitors can go to the port of Piraeus and take the ferry to Poros.