1. Barreta Island, also known as Ilha Deserta, is a beautiful uninhabited island located in the Ria Formosa Nature Park near Faro, Portugal. It is the southernmost point of mainland Portugal and is considered a hidden gem for nature lovers and beach enthusiasts.

The island is characterized by its untouched natural beauty, boasting pristine sandy beaches and crystal-clear waters. It is a protected area, ensuring the preservation of its unique ecosystem. With no permanent structures or infrastructure, Barreta Island offers a peaceful and tranquil escape from the bustling city life.

One interesting fact about Barreta Island is that it is home to the only restaurant on the island called \"Estaminé.\" This rustic seafood restaurant offers the chance to enjoy a delicious meal while overlooking the stunning views of the surrounding nature. The island is also a popular spot for birdwatching, as it serves as a temporary refuge for several bird species during migration periods.

2. The working hours of Barreta Island and its facilities can vary depending on the season. The restaurant \"Estaminé\" operates from Tuesday to Sunday, from 10:00 AM to 9:00 PM during the summer months. It is recommended to check their official website or contact them directly for the most up-to-date information. Unfortunately, no specific phone number is available for Barreta Island itself, as it is a natural reserve without a permanent human presence.

3. To reach Barreta Island, you can take a regular ferry service from Faro’s city center. The ferry departs from the Cais da Porta Nova and takes approximately 45 minutes to reach the island. The ferry service operates daily during the summer months, but schedules may vary during the rest of the year, so it’s advisable to check with the ferry operator.

Regarding ticket information, you can purchase the ferry tickets at the boat terminal in Faro. The prices may vary depending on the season and the specific ferry service provider. It is recommended to inquire about the ticket prices and availability at the terminal or check the official website of the ferry operator.