The Host - excellent. When I arrived, there was no wifi. I informed the host and he brought over the charged wifi router in minutes. The device worked perfectly and is a must have for anyone traveling to Japan. Host was commuicative and supportive of anything I needed.
The Place - very good. For 2-3 people, the place is wonderful. It had everything I needed and reasonably spacious - especially the bathroom, for Japan standards. I had some very minor issues with cleanliness. There was an odor issue in the toilet which the host is aware of and I'm sure will be resolved soon. Nice air conditioning. Not much of a view though. There is no security to building entrance - which I'm fine with. There is a camera at the apartment door. Unit is one floor up from the ground floor.
The Location - good. It is a 23 minute walk from this place to the JR Shinjuku station and shopping malls. It is a 3 minute walk to the local subway station. There are a couple of coffee shops a few minutes away and a laundromat across the street which you may need because the unit does not have (working) laundry. There are a few restaurants (Indian, Chinese, Japanese, etc.) in the immediate area but note this is a quiet residential area which is at least 10 minute walk from the main commercial area. If you want a quiet place and don' t mind walking a little, the place is fine. There is also a TV.
Wishes - an extra towel or two would be nice. Also, I would have liked the ability to control the shower temperature. It was very hot and humid and taking a cool shower would have been nice.
Value - all the above points are nit-picking. For the price, this place is unbelievable. If you want a quiet place that is not too far from the main Shinjuku area at an incredible price, I highly recommend.