Dong's place is very tidy and quiet. It doesn't have much free space it is common in Tokyo. The transportation is convenient that only 3 minutes walk to Nishi Shinjuku Metro station and 10 minutes to Shinjuku JR station. I took limousine bus from airport to Hilton Tokyo Shinjuku and walked 5 minutes to Dong's place. She provides pocket WiFi too that solved my internet needs.