Due to economic situation in PR, the local banks are a little more strict than usual, so it is just a little harder to get a loan.
If you live in the property (say upstairs) and rent the downstairs, a simple mortgage will do.
I am going cash, I purchased some land already, will build my house and then about a year latter I plan to add a second floor, I will move to the second floor and leave the downstairs which will be bigger, for AirBnB like renting. There is sufficient land to build 1 or two more places there if I feel like it.
Not sure if that will do for you or if you are looking to build a 12-20 room hostel, that will require a lot more money and maybe multiple partners.