We purchased this home when our children were young. We used the 2 bedroom downstairs ourselves and rented the 3 bedroom upper unit. We did not want to be in our renter's way, or make them overly aware of us. So we put in separate boardwalks, separate showers on each boardwalk, separate bench seating on the deck, and we insulated heavily between the floors. Our children grew up and had children of their own. We'd outgrown our cozy 2 bedroom unit. We then put in a spiral staircase that connects the two units, so it can be used as one 5 bedroom home with two living areas and two kitchens during the peak summer season when large combined families vacation together. We have a lock out door and insulation for the stairwell that we put in place during the spring and autumn. We've rented our lower unit and the upper unit simultaneously to unrelated parties for many years now. We have no problems or complaints about this arrangement from our renters who choose our home. Offering both units for rent simultaneously allows us to price very competitively.