The location is a quiet and peaceful, perfect for a chill out. The town of Ballinamore is only 8k away with lively bars and restaurants for the more adventurous! Plenty to do and see locally, there's a waterfall/swimming hole, Folk Museum, Golf Course (only one in Leitrim), a real Cowboy Saloon etc etc; and within 30 minutes drive or so you have Drumshambo (think Gin) or Carrick-on-Shannon, Slieve Iarainn, Cavan Burren Park.
The house is cosy with everything you need except a freezer, which in normal Irish weather wouldn't have been a bother, but we were there in the heatwave and could have used a small freezer for ice creams etc; but we managed perfectly fine, and discovered Murphy's shop in the village have a new ice cream machine - info courtesy of the friendly neighbours! - so problem solved!!!
We didn't get to meet Mary, as she was away visiting family, but there was a mobile # to contact which we didn't require.
We had a great time in a part of the world we had never visited, and I would recommend Mary's Buttercup Cottage as the perfect place to escape the rat race and unwind.