Can I ask what you are going to do in the Lake District as I know a lot about the Lakes so can advise you where to stay if I know what you want to do.
While the Lake District is not that big, getting round it is not that easy or that quick. The roads are mostly narrow and winding, and the centre of the lakes is a huge mass of mountains so you often have to go "round" them by car as you cant easily go over them.
So, for example, to get from say Windermere in the South East to the west of the lakes (say *********) can look close on the map but can take half a day to get to by car.
It is usually best to decide on an "area" of the lakes (South East for example or North East) and then spend most of your time in that one area.
The three largest towns in the lakes are Keswick in the North East, Ambleside in the (sort of ) centre, and Windermere / Bowness in the South East (I dont count Kendal as that is slightly outside the lakes).
There are lots of other smaller places like Grassmere, Hawkshead, Coniston etc
It is obviously a great place for walking, but for watersports it tends to be mostly Windermere (I think they are banned on the other lakes).
As I said, if you want to know more just ask and I will try and help,