Below, possible accomodations, close to the meeting place, are listed:

1. Hotel LUZ**** : https://www.hotelluz.com/
2. EuroHotel Castelló Estació**** : https://eurohotelcastello.com/
3. Hotel Doña Lola** : http://www.hoteldonalola.com/
4. Hotel Zaymar** : http://www.hotelzaymar.com/index.php
5. Hotel Tryp Castellón Center**** : https://www.melia.com/es/hoteles/espana/castellon/tryp-castellon-center/index.htm
6. Sercotel Hotel Jaime I*** : https://www.sercotelhoteles.com/hoteles/espana/Castellon/jaime-i/

1st and 2nd options are the closet ones, just in front of the train station (where you take the TRAM to the UJI), the 3rd and 4th are 10 minutes walking to the station, and the 5th and 6th are 15 minutes walking to the station.