This place is truly one of those hidden gem kind of places. Don't let the approximate 30min away from Tokyo discourage you from staying here. Tateishi is a great little town, with lots of places to eat and drink just around the house. It is also give you a glimpse into a true local neighborhood; peaceful and Zen.
As for the place itself, it was very clean, well furnished and closely located to the train station. Host was very prompt with response and helpful. The so called 30min train ride into Tokyo is not an issue at all, as trains are so good in Japan that you never feel like you are just sitting at the station waiting for a train.
All in all my only advise would be to make sure you leave a day or at very least a night to explore the neighborhood. We truly regret not don't so :(