From the latest news this summer, when we heard about a lack of water in the Capital city, it could be smart provide each new building with a water storage, to use it for the domestic custom.
For winter, as already said before, since it's not a particularly cold nor long period, it should be enough paying attention to the stratigraphy of the walls, and something that might go against the vernacular architecture could regard the dimension of the windows, since nowadays is more used to have them larger to let more natural light in. This could be disadvantageous from the point of view of heat losses in that particoular period, but they can be prevented by using specific glasses.