There have been increasing reports of mobile batteries emitting smoke or catching fire, both in Japan and overseas. To ensure the safety and comfort of all our guests, we kindly ask for your cooperation regarding the use of mobile batteries in guest rooms, as outlined below:
Please refrain from charging mobile batteries when you are away from the room.
When charging portable electronic devices using a mobile battery, or when charging the mobile battery using an in-room power outlet, please avoid placing it near windows with direct sunlight or on flammable surfaces such as beds and sheets.
To minimize the risk of fire or malfunction, please use mobile batteries only in locations where you can regularly monitor their condition.
If any of the above situations are observed during room cleaning while you are staying with us, our staff may, for safety reasons, move the mobile battery to another location or stop the charging process.
We appreciate your understanding and cooperation.
Thank you very much for your continued patronage and warm support of Shinjuku Washington Hotel.
We are writing to inform you that we have recently confirmed incidents where fraudulent messages impersonating our hotel and Booking.com are being sent to customers. These messages are being distributed through messaging apps such as WhatsApp and contain unauthorized URL links that may redirect recipients to malicious phishing sites (fraudulent websites).
Please be advised that neither our hotel nor Booking.com will ever contact guests directly through messaging apps such as WhatsApp regarding reservation details or credit card information. Should you receive any suspicious message of this nature, we strongly urge you not to click on or access any URL links included in such messages, in order to protect yourself from potential fraud.
We sincerely apologize for any anxiety or inconvenience this situation may have caused our valued guests. We kindly ask for your continued vigilance and caution regarding this matter.
May 8, 2026
In order to provide a more comfortable experience for our customers, Shinjuku Washington Hotel has
A service that allows you to easily view various information on hotel facilities, guest rooms, restaurants, etc. on your smartphone.
We have introduced “Smartphone Concierge”.
It supports English, Korean, simplified language, and traditional language.
Other languages can also be viewed using the AI translation function.Please take advantage of it according to your stay.
How to use
・Read the QR code above on your mobile phone and click on the icon for the information you want to find out.
・Click here from your computer
