Judgment of the Court (Eighth Chamber) of 3 September 2020.#NM, acting as liquidator of de NIKI Luftfahrt GmbH v ON.#Request for a preliminary ruling from the Oberster Gerichtshof.#Reference for a preliminary ruling – Air transport – Regulation (EC) No 261/2004 – Articles 5 and 9 – Obligation of the air carrier to offer hotel accommodation to passengers whose flights have been cancelled – Damage suffered by a passenger during her stay at the hotel providing the accommodation – Possibility of invoking the liability of the air carrier as a result of negligence on the part of employees of the hotel.#Case C-530/19.