How to reach this old hotel stuck in the middle of Narita airport runways?

木の根ペンション (Kinone pension) is a very special hotel, right in the middle of Narita Airport:

It seems to have no website and no phone number, it can't be found on booking websites. It is on Google Maps though. This Excite article says it costs 1000 yen per night (yes very cheap), the article talks about a tunnel to go there without giving precise directions, and instructs readers to ignore the "No entrance" signs.

QUESTION: How can I walk to this hotel from a Narita airport terminal?
Anything special I should be aware of if I want to stay there?

This Yahoo Answers page asks the exact same question, but the answers don't give directions, only talking about the heavy police surveillance.

Best Answer

Google Maps places the pension slightly differently than the buildings you located. This appears to be the route on Google Maps.

Google Maps satellite photo also seems to match the pictures found under this link about a festival that took place at the pension. You can see a garden and solar panels in the pictures that seem to also be visible in the satellite photo. If I understand correctly, you enter a tunnel at Higashi-Narita Station, and will find the pension on your left as you exit the end of the tunnel, and there is also a pedestrian tunnel from the Airport to Higashi-Narita station.