Very convenient location. Jennie's place is only about a 10 minute walk to Ueno station, which is a major station with the Yamanote line, or a minute from Inaricho (Ginza line, which also connects to Ueno).
Jennie was very responsive and helped me answer a few questions about our stay. The place is in a secure apartment/hotel with double code access. The room looks pretty new and very clean, as per the high Japanese standards. The shower water pressure was actually really strong, so I enjoyed that.
Overall, I very enjoyed my stay and will definitely stay here again if the opportunity raises again.