Do not offer to wonder around, conduct a tour.

When showing the property, don't offer to wonder around. Offer a guided tour. This way you can point at the selling features (kitchen, large room, view from the deck). "Hon, look here's a kitchen" will be converted into "Here's the large kitchen with isle, all appliances, including new fridge and gorgeous view - if you place your dining table here, you will enjoy the view every morning".