Good things first: Yoko is a very nice host and very responsive. I was able to put my stuff in the apartment before check-in. The apartment is in a very convenient area, the JR subway (the one which takes you to Shibuya, Shinjuku, all you wanna see) is 10 minutes away. For that, the price is great. I even booked one more day because it was so convenient.
Now the BUT. I am not going to say it was dirty all over. But there were some areas which were definitely filthy. The area when you come in has definitely not been cleaned, the floor was dirty. The area beneath the sink where things are stored was really filthy, same thing with the place where the pans are stored. The pans were also kind of dirty. I know the apartment is cheap and the rest of the apartment was really good, but I don't think such things should really happen even at a cheap price.
Anyways, I had an okay time in the apartment, although next time I am definitely go for something better.