The house is good for 3-4 people to stay long term. The house is in a quiet neighborhood but at the same time it is very close to popular destinations such as Shinjuku or Shibuya.
The host was responsive and thoroughly assisted us throughout our stay.
As for the cons, we faced two small issues. First, there was no mirror in the house, so we bought one from a dollar store (and we left it in the house, so you probably don't need to worry about that). Second, the heater on the first floor occasionally stopped working but it would be fine once restarted.
Overall, it has been a positive experience and definitely a worthwhile value for what we paid.