The place was a bit far from the nearest train station (Funabori) so I suggest you hail a cab instead if you have a lot of stuff with you (we had 2 weeks in Japan). It just cost ¥400-¥500. If travelling lightly, then it's not really a bother and really just a leisurely walk. Via taxi, Tokyo Station is around ¥4000-¥5000.
A convenience store is right inside Funabori station called Seikatsu Saika; moreover, both Family Mart and 7-Eleven are nearby.
Mr. Masakatsu is a great guy. He can speak better English than most Japanese guys his age. He's a jolly character, a very accomodating fellow. He gave us free tickets to the onsen he also owns nearby, sadly we didn't have time to use it. He also helped my mom carry her luggage upstairs.
His place had the basics. WiFi was via a portable router. The place was clean. No microwave though and just the regular toilet (not the fancy Japanese ones) which was good. Water pressure was good. Towels were big and the bed provided was really comfortable and literally spring-y. I would recommend this place for the cost and comfort.