The apartments are quite nice, practically new, and the location is perfect with parking options nearby.
I agree with other reviews regarding the sewer smell that can sometimes be noticed in the bathrooms, but this smell is persistent in much of the city, especially in the center, so it’s likely not an issue with the accommodation itself but rather with the city.
I also agree with the opinion that there should be more kitchen utensils. If I’m renting an apartment with a kitchen, it’s because I intend to cook and make use of the facilities. If I didn’t want to cook, I would just stay in a regular hotel.
We didn’t have any issues that required contacting customer service, but on a couple of occasions I had questions and communication was quite difficult — they almost never answer the phone. If you’re going to stay here, I recommend having everything arranged before your arrival (online check-in, security deposit, etc.) so you don’t need to rely on customer service at all.
Overall, the whole process — price, condition of the accommodation, location, etc. — is perfect. When I come back to Castellón, I wouldn’t hesitate to stay here again. That said, I would bring a couple of kitchen utensils to be able to cook more comfortably.