Dear Nhatkaa

Thank you very much for taking your time to share your review on Trip Advisor.
Our hotel is close to subway Nishi-Shinjuku Station whih is one stop away from main Shinjuku station. If you have many luggage I recommend to use the Nishi-Shinjuku station so you do not have to walk long distance.
As you mentioned there are plenty of shops and convenience stores and some of the shops opens until late night or 24 hours.
We hope to be your host again in the future.
Best regards,

Nishitetsu Inn Shinjuku
Hiroshi Kaiwa