There are supermarkets much closer!!!We styaed at Troutbeck Head in July, and as the other posts say it is an excellent site. Location is key, if you like walking, cycling, outdoor pursuits then it's a great site. Howver if you are after the tourist hotspots of Ambleside, Windermere etc, it's a long drive!
The actually area surrounding Troutbeck Head is beautiful, and the noise from the attached activity centre is minimal really, just a few screams every now and again when a buggy goes through the beck and everyone gets wet!
Nearest proper supermarkets are quite a distance away in Carlisle, but the main road access is good.