Castlemartin is a small quiet village in Pembrokeshire. Initially the site of a Norman motte-and bailey castle and within the Pembrokeshire Coast National park Castlemartin boasts a coastline of spectacular limestone cliffs characterised by large sea caves, natural arches and stacks. As well as the idyllic walks Castlemartin is close to attractions for the whole family including both a theme park and a wildlife park making it an ideal location for a Family vacation or a quiet weekend of walking and enjoying the scenery. The Problem: The owners of this four star converted barn holiday cottage property realised they had a high energy demand and it was important this demand was reduced in an eco-friendly way. Heating the stone walled ho

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