"You likely will find the lowest price at Europa
There is a very big reason for these super low prices - CRIME.
Plaza Sosua is ten times safer. It has a solid metal gate.
I have stayed at Europa several times and have never had any issues with crime there.
They have a guard posted there at night and the front desk monitors things during the day
Never stayed at Plaza Sosua so have no opinion but aren't those apartments so your kinda on your own
If there both located in basically the same area seems hard to fathom that they would be 10 times safer but whatever makes you sleep good at night