How deep should a bedroom alcove bench be for seating?

A bedroom alcove bench should be between eighteen and twenty-one inches deep to provide comfortable seating without overwhelming the small space. This depth fits well in typical alcoves, offering enough room for cushions or folding legs to rest comfortably. Keep the bench design simple and pair it with warm lighting above to transform an awkward cutout into a welcoming reading nook or plant corner. Additional storage can be added underneath the bench for maximizing utility.