I would install solar panels on the roof, cover the concrete porch with wood, minimize the size of the stones leading to the stairs in the third picture, and replace the black walls with wood. -HSG modern 300 house in Vilnius by NG architects
Westcliff Pavilion House by GASS Architecture Studio
Container House - Westcliff Pavillion // Architecture Studio - Same design could be used in Container home. - Who Else Wants Simple Step-By-Step Plans To Design And Build A Container Home From Scratch?