For most people, I can confidently say this would be a 5/5 review. Excellent space, great kitchen, awesome view of the Skytree (especially at night), and clean. Quiet even though it is a fairly short distance from a main road. Very big balcony which is great to relax on during cool nights.
My one issue (more of a concern for long-stays or those that place importance on fast internet), which would take this down to a 3/5, is that the internet would become extremely slow after about 11am-12pm. Normal speeds were 400-500+ Mbps, but after about noon until around midnight it would drop to under 5Mbps, sometimes as low as 1Mbps which, needless to say, was not enough to even stream 480p videos without a lot of buffering. This may have been due to congestion, but I'm unsure. What I can say, though, was that Aileen was very responsive to my concerns about this and worked to fix it, even though it wasn't fixed in the end (likely congestion issues which would be out of her hands to fix). Aileen even provided me pocket wifi within a day of my telling her of the issue. Because of this responsiveness, my overall review remains at 5/5, but it is important to note this for those who place importance on fast internet.