"First off this hotel is really in the middle of nowhere in Narita. Know that before you book.
Overall the staff was amazing and the shuttles were nice. The shuttles do have random limited times so be aware of that since you will plan your day around the random times they pick up. Which are few in between for some areas.
We did not try any of the food offered at the hotel due to prices and ended up Ubering food if we were stuck at the hotel. If you do not uber the closest food place is a 20 minute walk, and that is if it is open and only a few options.
My main complaint is that the rooms are outdated and because of this are in poor condition. The rooms always had a terrible smell and you cannot adjust the temperature. No washclothes, and the towels had an odd smell.
The onsen was amazing but not the main purpose of our visit at the hotel. The entertainment that the facility the onsen has in the brochure did not occur at all during our stay.
If you want a onsen experience multiple days in a row, I would consider booking this hotel. Otherwise look for something closer to the station for easier transportation. Also if you are sensitive to smell, do not book this place."