We spent 8 nights at the Hahns' Casa Tropical. Michael and Bertha were very friendly and took care of everything we needed or asked for. They speak German, Spanish, English and maybe a few more languages. Our apartment was spacious, clean and comfortable. The casa is peaceful all day, and quiet at night, which we prefer. The pool is clean and refreshing, and gets good sun most of the day. Meals on the balcony provided a nice opportunity to mix with our neighbors and enjoy the lush tropical landscaping (plenty of room to eat in the apartment if you prefer privacy). Michael's suggestions on restaurants, shopping, activities and attractions were all very helpful, and he got us a nice discount on a group tour to one attraction. Most activities we did on our own, having rented a car. No problem parking on the street in front of the Casa Tropical. Driving in the DR demands full attention and high situational awareness. I'm used to US East Coast urban traffic, but the DR definitely steps up the game. The motos (small motorcycles and scooters used to transport individuals, entire families, an array of cargo including building supplies, 40 lb propane tanks, lumber, live chickens, and fare-paying riders) are everywhere from all directions. Taxis, vans and buses are cheap, and probably the better choice for most Norteamericanos.
No need to drive if you don't want to. Inside the gated community of Costambar is a nice beach, although a drive of an hour or more will get you to some nicer ones. There is a country club, which has monthly membership ($30) which allows affordable golf, pool, tennis and fitness center. Also in Costambar is Spa Maria, where I got a good massage while my wife got a pedicure and manicure. Jenny Supermarket sells most of what you would need. Four restaurants on the beach and several more between Hahns' and the gate. Everything within eight minute's walk. If we stay again in the Puerto Plata area, we would stay in Costambar, and if we stay in Costambar, it would be with the Hahns.