Very close to the imperial palace.
Posted Sep 9, 2016
Nice business hotel, more for business people than tourists though. Location, very close to the imperial palace but on the other side of the park from tokyo station so you have a 3km walk to tokyo station, and a long journey to most of the touristy places, so not the best location for tourists. Room was clean and comfortable enough, but on the first night our air conditioner was really noisy so it was difficult to sleep.
All in all a very decent hotel. The big plus for me was the following:
In tokyo foreign tourists by law have to show their passport at hotel checkin. However, if you are non-japanese but are resident in japan(eg you live in japan), by law you are not required to show passport or photo id at hotel checkin(just like japanese nationals). Many hotels see a foreign face and insist you show your passport, even if you have a japanese address. The diamond hotel didnt do this, I told them i was a resident of japan, wrote my address and they were happy with that. So they have very well trained reception staff. Well done the diamond hotel.