It's a great location for visiting Slieve League. It's literally down the road. It was fairly rustic compared to the other places we stayed in Ireland, but it was also charming and Betty was very helpful at providing instructions. The primary heat is a fireplace, but if you don't want to light a fire, you can also just activate the radiators via an electric water heater (we did the latter). It was a great place to stay.
Side note: If you're visiting Slieve League, you continue up the road and there's a parking area and a gate. This is where you park if you want to do the entire walk (about 2 miles if I remember right). Instead, you can just open the gate and continue driving - there's another parking area at the end of the drive.