Villa Sol, in the Blue Bay Beach Resort, is lovely - we spent most of our time on the spacious, wrap-around porch, which is comfortably furnished and equipped with ceiling fans (hurray). The kitchen is very well equipped, the wi-fi works consistently, and the showers/water pressure are perfect. The unit has been well-maintained, and the local contact, Erica, is friendly and helpful, and responded promptly to questions and requests.
Blue Bay itself is a great location. We loved the beach, the beach bar, and the beach restaurant. It's a great place to swim and snorkel, or just read a book. Beautiful flowering shrubs and plants make the walk to the beach a pleasure. It also makes a great base for exploring Willemstad or any of the island's other amazing beaches. I can't recommend it more highly, and hope to return soon.