The Melia Braga Hotel & Spa is scheduled to open in June. Located in Braga's main development district, it is set to offer 180 rooms and a 750sqm congress centre, which includes six meeting rooms.
In addition, the company has announced plans to open two properties in Columbia.
The 253-room Melia Barranquilla will include a convention centre with capacity for 1,000 delegates.
The Melia Cartagena will offer 268 rooms, plus meeting space, in a building that will also include a shopping centre and casino.
A spokesman said the company had added 20 hotels to its portfolio during 2009 as part of its brand development strategy.