1. Ribeira is a historic district located in Porto, Portugal. It is situated along the Douro River and is known for its colorful buildings, narrow medieval streets, and numerous restaurants and cafes. Ribeira is a UNESCO World Heritage Site and is considered to be one of the most picturesque areas in Porto. It is also home to landmarks such as the Ribeira Square, the Sao Francisco Church, and the Ponte de Dom Luis I Bridge.

2. Ribeira is an area that is open all day, usually until late at night. There are no specific working hours for the restaurants, cafes, and shops in the area. However, it is recommended to check with each individual establishment for their opening and closing times. If you need to contact Ribeira, there is no specific phone number. However, you can find tourist information at the Porto Tourist Office located in Ribeira.

3. Ribeira is easily accessible by public transportation. You can take a bus, metro, or train to get to the area. There are also numerous taxis available in Porto. The ticket price for transportation varies depending on the mode of transportation and the distance traveled. It is recommended to purchase a Porto Card, which provides free access and discounts to many of the city’s attractions, including public transportation.