Judgment of the Court (Grand Chamber) of 19 December 2019.#Criminal proceedings against X.#Request for a preliminary ruling from the Juge d'instruction du tribunal de grande instance de Paris.#Reference for a preliminary ruling — Directive 2000/31/EC — Information society services — Directive 2006/123/EC — Services — Connection of hosts, whether businesses or individuals, with accommodation to rent with persons seeking that type of accommodation — Qualification — National legislation imposing certain restrictions on the exercise of the profession of real estate agent — Directive 2000/31/EC — Article 3(4)(b), second indent — Obligation to give notification of measures restricting the freedom to provide information society services — Failure to give notification — Enforceability — Criminal proceedings with an ancillary civil action.#Case C-390/18.