Oh excellent question Ton. Am on a bit of a mission to drink my way around all Lake pubs with micro-breweries and any decent looking real ale establishment.
Favourite pub/micro brewery beer so far is the Black Bull in Coniston. However, it is an idiosyncratic type of place (I love it, the OH walked in and straight out). Favourite pub Eagle and Child in Stavely. If you run out of beer you can always head up to the Hawkshead brewery (good beer, corporate ambience) in the station yard (next to Wilfs Cafe).
Overrated pub/micro-brewer/beer is the Barngate Brewery.
Underrated beer Stringers XB (also love Ulverston Brewing cos Laughing Gravy).
However, favourite Lakeland pub has got to be the Tower Bank arms in near Sawrey. Excellent well kept beer, good food, lovely location and a landlord that isn’t overly friendly but takes very good care of his customers. (Also the last place I ever shared a pint with my dad).
Been to all of these in the last 18 months.