We rented the house for a small family gathering and I have to say it was absolutely perfect for it. The views from the house mean you could spend the whole weekend staring out the window and you'd still have a great time.
The house itself is very beautiful and stylish and allows for everyone to be together but also has hidden bits if you want some time on your own. The facilities in the house itself are second to none and Rossnowlagh is a beautiful little spot. I can't recommend this place enough.