From the outset, one of the prime aims for the project was to adhere to ecological baselines. Ample provision was made to fully exhaust the capacities for heat accumulation, heat storage and retarded heat output during the summer as well as during the winter season. In summer, a densely planted wooden trellis prevents superheating. The subfloor stone heat accumulator is screened by the folding balcony, which then also enlarges the surface area of the terrace.