Hiro-san was very responsive to my questions. I really enjoyed the place; nice tranquil park next door, good natural lighting in the apartment.
There's another review that says Wi-Fi was capped at 2 GB but Hiro-san confirmed that they've removed that cap. I had no Internet issues.
Some minor amenities were listed but missing, like salt and pepper, but Hiro-san let me know that I could just buy them at the supermarket and took the price off my Airbnb payment.
All in all a pleasant stay.