It's on Alejo Martinez, directly across the street from the Codetel call center, behind Baileys restaurant.
I'm doing this by memory, but am almost positive that the phone number is 809-571-1424 and the fellows name to speak to over there, is Ramon.
He's a very friendly honest dude, born in Germany, lived here for many years and he speaks English.
If it helps in any fashion, you can mention knowing me, although I do believe that he treats everybody equally.
If my directions do not suffice, please advise and I'll make up a map that marks the spot.
Marco.