Kimie's condo is a typical Japanese room.It has everything and clean you need for your staying there.(The internet access is used 5G!)I used shuttle bus(1,300 JPY) from NRT to Tokyo station, and took taxi to condo address(around 2,000JPY). The condo could be easy to walk to grocery store, restaurant, and convenience store from the room even though if it's raining.
I strongly recommend to visit Koishikawa Korakuen Gardens(Traditional Edo period garden),Tokyo dome city( LaQua shopping mall and spa) and Kagurazaka shopping street by walking.