I'm really picky about the way the back of my house faces. After owning a house that faced due west in the back, I thought...never again! It was always too hot to enjoy eating dinner on our deck or grilling. Since that house, years ago, I've always gone for a southeast facing deck or patio. The sun is behind the house in the late afternoon, so we can enjoy dining alfresco. The southern slant gives more light during the winter months.