I've stayed there for at least a day or 2 on probably 10 different DR trips, and would highly recommend it as a remarkably tranquil place with spectacular views of the bay. Few ammenities (no AC, TV or phone in rooms but they do have wifi in the lobby) Last time I was there I believe I paid 1300RD for my room. Nice lobby restaurant overlooking the bay as well and a small beach which is calm and great for swimming. No website, and I can't find the phone number, but I've always been able to get a room w/o reservation.
They have a planta, but I don't think they use it during the day, so there are times you are w/o power.