Yes,
Some of them do have kitchen facilities...but not many. I think 3 or 4. The rest just have a bed, desk, dresser and a bathroom. They may provide you with a hot plate or a fridge if you ask. I haven't stayed their in about 3 years now...but I am sure they wouldn't have added any kitchens.
Sorry, I can't find the phone number. I am sure they are in the phone book in Puerto Plata..maybe someone can look it up for you.
Good luck!