Great question! I, too, love mature trees and established neighborhoods. I'm glad to hear you're interested in the Middleton area. Middleton is my specialty! I absolutely love the area.
One of my favorite neighborhoods in Middleton is the Foxridge Hills area. It is complete with mature trees, sidewalks, gorgeous surroundings, a great recreational park (Stricker Park) w/ pond. I made a VIDEO TOUR on the Foxridge Hills neighborhood (among others) on my site: <a href=
There are several parts of Middleton with mature tree and sidewalks but less walkable amenities. Most of the neighborhoods inside the belt line and HWY M will qualify though some will be easier to get around on foot.
I would be happy share listings with you and provide any other detailed information that you might find useful.
Madison Buyer Agency