It's better to mask an unsightly view and still let light through. One of the easiest and least expensive solutions is to hang panels of sheer fabric. The fabric can be anchored to rods at the top and bottom of the window casing. Soft gathers in the fabric will create a flattering look and further obliterate the view through the window. The texture will obscure the view and will let light freely enter the room.
Vertical blinds are effective when slightly opened to let in light but angled to block the view.
Beyond these treatments, you can be more creative. Pay attention to the important rooms The rooms that attract the most attention from buyers are the kitchen and bathrooms. Everyone wants these to be bright, modern, and roomy. If you can't do much more than to improve a few things around your house, these are the rooms that pay the best dividends. Don't hang around while the agent is showing your house to a prospective buyer.