In my experience, the Kitchen, Master Bedroom, Bath and closet space sell the home for the Wife, the Garage and attic space is for the husband. Also be spurce up your yard. Simple non-expensive do overs.
Be sure that your Kitchen is updated without major expense: include the little things like pull out drawers in at least 3 cabinets, change your lighting to recessed. Include shelving in all closets and pantry area's, and put a few annuals in your front yard, trim your tree's and be sure to water your grass area's so that it looks green. With the garage, be sure if there is attic access, purchase a stair lift.
All of these can be completed at reasonable investment. In addition, try to depersonalize your home for viewing purposes. Remove access clutter, this alone can give the prospect buyer a" perception" to place their own personal belongings in that wide open space. The can visualize their belongings.