At the other end of the accommodation spectrum, www.coastalcottages.co.uk has the Honey Nook in Pembrokeshire available.
It sleeps five people, pets are allowed and it costs a reasonable €475 for the week. From this snug little haven built in local stone with timbered ceilings, you can explore the beaches (albeit well wrapped up) and strike out on the Pembrokeshire Coastal Path.
Alternatively, just light the fire in the living room, watch DVDs and scoff chocolates while the English festive weather does its worst outside.