This Villa in Smíchov bears the name of lawyer Joseph Winternitz, and was built for his family in 1932. The architects he chose were Adolf Loos (one of the founders of modern architecture) and Karel Lhota. Villa Winternitz is the last building by Adolf Loos that he saw built in his lifetime. Like the Müller Villa, it is characteristic of the Loos arrangement of space (the so-called Raumplan). Racial prejudice forced the family to leave the Villa in 1941 and they never went back. Under the restitution, the Villa reverted to the descendants of the original owners, who managed to restore it to its former glory.
Source: https://www.prague.eu/en/object/places/2843/winternitz-villa