Housing
Swissys were bred as hardy working dogs able to withstand inclement weather and moderate temperature variations in Western Europe. They lived outside and took shelter in dog houses, barns or whatever buildings were available. They worked in rain, snow, heat and cold.
Hence, Swissys do not have to live inside a home at all times. They will easily adjust to accommodations other than your couch or bed. However, we have to take into consideration the vast climatic differences in this country. Swissys will have to spend necessarily more time indoors in hot or humid Arizona or Florida than in more temperate Oregon or Pennsylvania. But Swissys will adjust to humidity and heat quite well as long as they have access to shade, a cool surface to lie on and plenty of water in a well ventilated area. And while they are used to cold temperatures, they are not arctic sled dogs and thus cannot be expected to behave as such.
Remember, where your Swissy sleeps is not nearly as important as where he is when you are at home and not sleeping, too!