I had concerns because the VRBO reviews were too uniformly positive to be believed, but we really very pleased. (I will put this review, minus this statement, on TripAdvisor--which has reviews of all sorts--to show its sincerity.)
We rented directly from the owner well in advance, which proved to be much cheaper. We came from the U.S. to stay for the month of January 2014, and were very pleased. The unit is just as described/shown, except the picture of the beach is very old and was taken when an older fence was up and before a road was built between the units and the beach. (I am adding a new picture on TripAdvisor.) Cars may park on the beach beside the road and play their radios full blast during the day, but that did not prevent us from taking a siesta most days and we could hear only the surf after about 6 PM weekdays and 9 PM holidays. (Noise after 10 PM is forbidden by law in Costa Rica.) The grounds are beautifully kept. Mowing and leaf blowing seems confined to mornings after 9 AM.
Our unit was charming, decorated in an African art, and well outfitted. Yes, the kitchenware shows hard use by previous tenants: the teflon on some pans was torn up and I had to buy a measuring cup, but all the important elements were there-tableware for four. (The onsite manager, Brian brought a heavy-duty extension cord to circumvent the nonfunctional electrical outlet, so we could use the microwave, and he showed us how to work the drier, and replaced the missing beach towel. He repaired the table lamp when it shorted out, called the police when someone decided to play loud music in the middle of the night) , and found us the best hospital in San Jose when I fell and broke my hip.
I recommend bringing tall rain boots for park treks in damp weather--these are $14, at El Lagar-- a sharp paring knife, measuring spoons, and an omelet pan. Prices are reasonable for a tourist location, except at El Lagar, which does have all the things tourists might want. We saw lots of birds including four scarlet macaws.
There are ten buildings in Bahia Azul, each with three units. There are no common walls, so all we heard of the neighbors is an occasional chair scraping above us. The units each have two bedrooms, making it a pleasant stay for four people-- we had a couple as guests for one week of our stay. We went through 5.2 earthquake on Jan.17 (centered in Jaco) with absolutely no ill effects--nothing was disturbed or came off the walls.