The three star Carlos III Hotel is located in the very centre of the city in Cartagena's commercial and financial district. It is 500 metres from the historical area of Cartagena, 500 metres from the train and bus station and one kilometre from the port.

The Carlos III has 96 rooms including six junior suites. All are equipped with bathroom, desk, internet wi-fi, satellite television, telephone, radio, mini bar, air conditioning, central heating, bathrobe, hair dryer, safety deposit box and room service. there is a non smoking floor.

The hotel has eight meeting rooms with capacities from 25 to 300 persons. All the meeting rooms, some of them with natural light, are equipped with audiovisual media, internet wi-fi and photocopy and fax service. There is a free wi-fi system, business centre, the 'A Priori' restaurant, 'Mesón Las Viñas', buffet breakfast, coffee shop, private dining room, garage, fax service, laundry and dry cleaning service.