Beira Rio is a hotel in central Mértola, suited to a stay exploring the old town and the Alentejo landscape. It sits by the Guadiana River near the pier. The town’s narrow lanes and medieval squares hold museum spaces tracing its Moorish, Roman and later histories. Some rooms have balconies, while others open onto broad terraces; all have a private bathroom with a modern shower. There is a bar on site, continental buffet breakfast and free parking. Nearby activities include boat trips, birdwatching, canoeing and walking.