1. Enough window that the light from the sun can come from outside (that you won't need so much electric light inside), and where they do not add additional lights outside in the night time, so that only the light of moon and stars can be seen.

2. We should also avoid (and undo) the noise and pollution. The weather and birds and animals can be heard better too, then.

3. We will have electric power but should not overuse it and should not overly rely on it. If the power is not working, then the things can be done without the electric power, too.

4. Outside, there will mostly be the trees, flowers, insects, etc. (There can also be grow vegetables at the appropriate time of the year.) Also sun dial; when walking outside (or if the electric clock doesn't work) you can see the time by sun dial, too.

5. The other places that you can walk to, rather than needing the car and bus too much.

6. Don't be too hot/cold.

7. If the stuff is arranged well then hopefully it should not need too large amount of space. You also shouldn't need too many rooms; some rooms can be used for multiple purposes.