I love large walk in showers. I would flip the laundry over into bedroom 3 and combine it with pantry space. The current laundry area would be absorbed into the master bath for a large shower/soak tub. The current master tub would be storage.
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