Absolutely beautiful area. I think I know the house too and it's very sweet. Fields are quite hilly. Up a very steep hill so will be difficult to get to in snow/ice and absolutely nothing around - perhaps five/six houses and a set of little cottages that are owned by the caving club so not actually lived in. Nearest small shop is about five minutes drive. Pub about the same. Ystradgynlais about 10 minutes away and here there is a big tescos. There isn't any access to the mountains on horse from penwyllt, but the other side of the road there is bridleway access to the mountains. I live just outside Ystradgynlais, so any more questions, just ask.