Semi-integrated motorhomes designed for couples for winter camping are presented. In freezing temperatures, not only heating and insulation must function reliably, but also water lines, tanks, and other onboard technology should be protected from freezing. Key features include a heated double floor, good heat distribution, and an insulated, heatable waste water tank. The number and position of heating vents also matter: the bathroom, bed area, and storage compartments should not be significantly colder than the living area.