My last stay here (2 years ago) was quite pleasant, that's why I came back with my family. However, it's unlikely that i would recommend Koshinoyu again after this.
Basically, things didn't change after my last stay. Rooms are still clean with perfect seaview, and the hotel provides pick-up and drop-off services at reasonable price, which I really appreciate.
The problem is that they no longer have English-speaking staff, at the time i checked in they gave me the keys and maps then it's all done. I tried asking about directions, changing dinner time, making hot baths arrangements but all of these had been so hard.
I can't comment on the service but I am confident that hotels in Japan are all committed to providing pleasant services but on vacation I would prefer places easier for communication, so for me I think I am not coming back.More