Our stay was passable, but not great. When we arrived we were assigned a much smaller room than we had booked. We were moved to a different room again but it was still small and did not match the pictures on the listing. The biggest problem was the sewage smell from the sink, which really impacted our stay. After two requests to fix the sink it was eventually looked at, but the response was that there's a problem with the system that can't be fixed. The room was also very cold, with no way of changing the temperature.
The location was quite good - a 10min walk from Takadanobaba Station, which is on the main yamanote line to Shinjuku and Shibuya. The area is nice and quiet.
We were also sent a message after checkout, which said we must give a 5 star review or the host will complain to AirBnb. This may have influenced the reviews from other guests.