@Traipse
Yew Tree Cottage is in a lovely spot. Right next to the Syke Farm Tea Shop. Think Alan owns Wilkinsyke Farm, not Syke Farm, but I could be wrong.
In case you were wondering, there aren't any shops in Buttermere, so if you need anything, you're best to pick it up in Keswick on your way through. Buttermere does have two two lovely lakes and two pubs; the Bridge, and the Buttermere Court Hotel (formally The Fish), and two cafes; Syke Farm Cafe and Croft Farm Cafe.
What dates will you be staying? I live quite near to Buttermere and I'm often there looking after the National Park car park. So, if there's anything you need to know about the area, then let me know.