Go for it!
I went to Santana Beach last year, I think it's a great
place, the food is one of the best I have tasted, the rooms are
clean and nice, well equiped with quality products like Rembrant tooth pasted and such.
The hotel is big, peasent to the eyes as they have many flowers and ornamental plants.
The discotech was ok, nothing out of the ordinary, it's located infront of the main entrance where they have a small town depiting San Pedro de Macoris' Victorian era.
I am sure you'll like Santana Beach like I did, have fun and enjoy it.