Coin-laundry near Park Hyatt Tokyo

Am planning a trip to Japan with my family, and am hoping to be able to do laundry while travelling. Can anyone direct me to a coin-laundry that is close to the Park Hyatt in Tokyo? Thank you!

There is one near there!
http://www.wash-fold.com/
To find it on google map, look up your park in Shinjuku, then type in アピッシュ (the name of the place)
or コインランドリー (coin laundry in japanese)

If you're staying at the Park Hyatt Tokyo, they provide laundry service for guests.

Yes, but it's a paid service, and it's not cheap. Then again you are staying at the Park Hyatt, and what is cheap there...?

There is a coin-laundry called "Baigetsu-coin-laundry" formally called "Baigetsu Public bath". A 1.2km or 10-15 mins walking distance. I think the coin-laundry close at night.
address: 6-20-11, Nishi-Shinjuku, Shinjuku-ku

The laundry locates in a hidden discrete place. The first time visitors 100% miss the place. The local neighbors won't even know the place unless they used to visit the public bath years & years which closed in September 2010.

Thanks for the help! I have some free nights at the Park Hyatt so it is not costing so much, but I'm sure having them do my laundry would...