Located about 4 km from the Parish Church of Saint James the Apostle, the 2-star Hotel Sierra Mar La Union offers functional rooms a mere 5 minutes' walk from the Cabezo Rajao Mining Complex. The hotel offers 24-hour reception and wake-up service as well as Wi-Fi in public areas.

The positioning of this smoke-free hotel in the centre of La Union ensures fast access to the Old Municipal Market, which is approximately 10 minutes' walk away. The Sierra Mar is a stone's throw from the Mining Museum of La Unión and is within a 15-minute drive of La Manga del Mar Menor. Also, Pieza minera is situated 550 metres away. The Las Matildes Mine lies 2.5 km away. Hotel Sierra Mar is located 40 km from Region of Murcia International airport and only 300 metres from Calle Real bus stop.

There are 6 rooms at this accommodation, each of them has an air conditioner, as well as entertainment amenities such as a flat-screen TV with satellite channels. The functional bathrooms include a bidet and a separate toilet. Guests can enjoy views of the city from the hotel.

The onsite bar has a lounge and is decorated with a fireplace and armchairs. In the immediate vicinity of the Sierra Mar La Union, El Almacen Lounge Cafe serves South American dishes.