I would recommend the Cabarete Beach Houses at Nanny Estate. The prices are very reasonable and you get a condo/townhouse right on the beach. I really enjoyed myself there too. Each unit comes with kitchen and you can drive into Cabarete or Sosua for groceries. Try their website at Cabarete Beach Houses and Nanny Estate Good Luck!!!
Also, google Velero & Magnifico. Nice places on east end of the bay, but about a 10 minute walk from kite zone as opposed to just walking out your door.