Hotel Civis Luz Castellón.

I stayed here with two girlfriends over Benicassim festival. We were pleasantly surprised with the size of the family room we booked - it was extremely spacious with plenty of storage space, and had everything we needed. The staff was really lovely and accommodating, giving us directions every day, bringing up things we asked for (such as a kettle, which doesn't come with the room), towels etc. The only thing I would say is the gym is absolutely tiny - it has a shaky treadmill, a bicycle, mats and a few weights, all in an area of about 10 square feet. There's also a terrace people tend to skip on, and the sauna tends to be off - you have to request to have it turned on, although I'm sure this isn't a problem. We found the price really reasonable as well, and a really convenient location (right in front of the train station). For Benicassim, the shuttles stopped right in front of the hotel. We would definitely stay here again.