What is it? Japanese hot springs, where you can enjoy indoor/outdoor baths or foot bath. You also get to wear a Yukata (type of Japanese kimono)
How to get there? Ooedo-Onsen is in Odaiba Island. They have detailed details of how to get there in their official website. Click here.
Hours: 11am to 9am of next morning
Admission fee: General admission -> Adults (12 and up) = 1,980 yen
[Tip: there are discounted rates available for evenings, extra late-evening, and morning baths. Click here for details of the rates.]
Recommended for: those who want to experience the Japanese Hot springs/baths while in Tokyo.
[Tip: since Ooedo-Onsen is open until 9am, if you are on a budget and have an early morning flight to catch (ex. like 5am), then instead of paying for another night at the hotel, you can spend the few hours you have before the airport enjoying the hot springs (and then sleep on your flight!).]