We were very impressed with the apartment. The communication upfront our stay was great, so we were completely prepared when we arrived. The apartment was clean and spacious. The balcony is a great feature, we could do some air plane spotting over breakfast. Inside of the apartment we didn't hear any noise coming from the airport which was great. We visited the swimming pool every day, and we were always able to get beach chairs and an umbrella.
From the apartment it is a short walk to Maho beach, one of the most exciting beaches you can find. Also Mullet bay is in walking distance, which is a beautiful beach, visited by many locals.
The parking garage and supermarket below the apartment are a great feature as well. If you don't rent a car, you can easily take a dollar-bus (local public transportation), they stop just in front of the apartment.
We had a great time and will certainly come back!