We stayed here for a short break with our 3 year old. The apartment was perfect for our needs. It is a little bit outside Westport town if you're planning on walking to the town but we knew that anyway in advance. There is shop below the apartment for the bare necessities and they sell great ice cream (they are also very helpful with local information). In addition there are a number of good eateries within a minute walk along the quay.
The only downside for us was that we had intermittent issues with the broadband though this could have been weather related as it was very windy during our stay.
Overall we would definitely recommend this apartment and would go back.
Bernie who meets you on check in is a character and is very helpful.