We stayed in David and Barbara’s property with our baby daughter and our dog in early September. The house ticked many boxes for us - close to the sea with a safe enclosed garden which was perfect for our dog. We found the house to be comfortable and lived in by a family, and have sent our comments on this to the host directly.
Mullaghmore was a little disappointing, as the hotels, restaurant, pool etc were closed as the season ended in August. If you stay in this property out of season, this is something to bear in mind. You absolutely need a car to get around as there is very little within walking distance. However it is a beautiful part of the world, and we enjoyed our stay in Sligo.