The Heatherhill mountain cottage was a nice place and met our needs well. I didn't meet Carmel, but she left a key for us that was easily found, giving us the freedom to come/go at our leisure without scheduling an arrival time in advance.
The location was great; pretty spot very near the Connamara National Park visitors' center and hiking trails. There was also a very excellent restaurant across the street at the Letterfrack Lodge, where we enjoyed a great dinner and breakfast.
The cottage itself was satisfactory. The kitchen was well equipped, we were happy to have a washer/dryer for our clothes, and we enjoyed using the fireplace one evening during our stay. The only (small) negatives were that the wifi signal was pretty slow and spotty, making internet access challenging, and the towels provided were more hand-towels than bathing towels (very small).
Overall, it was a nice stay and very convenient for our group of 4 adults.