Browse 5 star holiday cottages in Cornwall, Wales and the Isles of Scilly with Duchy of Cornwall Holiday Cottages. Tresco (Cornish: Enys Skaw, meaning "island of elder-trees") is the second-biggest island of the Isles of Scilly in Cornwall, England.It is 297 hectares (1.15 sq mi) in size, measuring about 3.5 kilometres (2.2 mi) by 1.75 kilometres (1.09 mi). Isle of Wight Self-Catering Holiday Cottages The most welcoming holiday island in…