Glad you're writing about this in a bit more detail. It intrigues me. Many questions..
Would you see it working in a cooler and cloudier climate, say the UK? Is solar only possible because you have constant sunlight? Do you think it would be possible to stay warm at night in a colder winter?
Also, where does the water for a shower come from, and if it's stored, where do you source it from? Do you cook in there or mostly eat out?