Here is a browseable listing of pet friendly self catering cottages in Gwent sleeping 4 - 5 guests.
Cottage list - Refine search
England - Scotland - Wales
Devon - Cornwall - Lake District - Highlands - North Wales - South West Wales
Usk Roman Fortress Usk, Gwent, Wales
Raglan Castle Castle
Blaenavon IronworksMuseum
Caerwent Roman TownRoman Site
Caerleon CastleCastle
Monmouth CastleCastle