Rhiannon and Nick run Abercynafon Farm, a fabulous barn conversion near Talybont Reservoir in the Brecon Beacons which the couple painstakingly restored from derelict (it had no electricity or running water). The four-bedroom barn accommodation is now available to rent for self-catering holidays and it's been beautifully converted with absolutely everything you need – including it's own micro hydro-electricity generator.