There was one in Kent, but I can't find... I looked at going there a few years ago.
Not in Kent but:
Self-catering holiday cottages with hot tubs in Suffolk Gladwin's Farm is right next to Nayland airfield (2min walk perhaps?)
Abalone Bed and Breakfast Highlands: Accommodation in rural location near Inverness Abalone BnB is right on there - but I think they target microlights more than light aircraft.