I loved staying at the Las Palmas villas in Las Terrenas. It is about a block and a half from the beach, and the cottages are beautiful. They have an open area where you can bar-b-que outside, and the grounds are beautifully landscaped. The cottages have a loft upstairs with 2 beds and a bathroom, a full-size kitchen equipped with all kitchen tools, sugar, milk, etc and a welcome tropical fruit plate. They have a large bedroom, and cable TV in the living room. My husband and I loved it, and paid $50 US/night, but that was during Christmas, so I think June will be much cheaper, as it is the low season.
For info, try this site
http://www.samana.net/las-palmas.html
or the link below
Have a great time in Las Terrenas, you will love it!