This resolution makes it very clear: Resolution No. 2 of January 16, 2009. If you like to read everything to confirm the information, you can download it here or search for it on the internet.
But I've also provided a summarized description for easy reference:
Efficient Apartments: Only one space for living room and bedroom, 2 habitants.
1-Bedroom Apartments: Without a study and/or family room, 2 habitants.
1-Bedroom Apartments: With a study and/or family room, 3 habitants.
2-Bedroom Apartments: Without a study or family room, 4 habitants.
2-Bedroom Apartments: With a study and/or family room, 5 habitants.
3-Bedroom Apartments or more: 5 habitants.
This information is key for calculating how many apartments it is possible to build, and sell in a new real estate develompent project.