First of all: Hiro apartment is exactly how you see in the pictures. Really nice, Japanese style and...big! Compared to an hotel room in Tokyo it's 2/3 times bigger. This helped us a lot for packing. The apartment is warm and all necessary amenities are there (hair dryer, towels, bath products, etc). The position is top, 5 min from the Shibuya cross but far away from the city noise. There is a Jazz club downstair, you can hear it but honestly in 5 days they had music only two times and around 10/11pm they stopped or turned down the volume because we couldn't hear anymore. We meet Hiro: he's really a nice person, we hope to meet him again. Plus more he helped us keeping the luggages the day of leaving.
We absolutely recommend Hiro and his apartments.