We loved our stay with Kaen. The apartment is very close to Okubo station and also Shin-okubo (yamanote line) very convenient. Also a short 12 min walk to Shinjuku. Kaen is very accomodating with our requests and always quick to respond. The apartment is very clean, clear guidance was given and we loved the little touch from the host (Kaen prepared free coffee, tea and also bottle water for us). Thanks Kaen, you will be our number 1 choice next time we visit Tokyo.