If you need an overnight accommodation on site, you can book it e.g. here:

Hotel NEPTUN Betriebsgesellschaft mbH
Seestraße 19
18119 Rostock-Warnemünde
Tel.: +49 381 777 0
E-Mail: info@hotel-neptun.de
https://www.hotel-neptun.de/

The room contingent of Hotel NEPTUN can be called up until October 7, 2022 under the keyword “Hydrogen”.

You can find more hotels of all price ranges e.g. under www.hrs.de, www.hotel.de, www.expedia.de

(All data without guarantee)