The niu hotel Frankfurt/MArchitecthaber turri architekten Frankfurt/MPhotographerKlaus BrandesFacadeSTP-DF-14/3B-WS STP-DF-14/3B-WS STP-DF-14/3B-WS STP-DF-14/3B-WS STP-DF-14/3B-WS STP-DF-14/3B-WS