That sounds like a lot of fun, @jose_oliveira! Tokyo is a place I’ve always wanted to visit. Here is a link to a discussion similar to yours, it was created a few years ago so it may be outdated. However, there are still some great attractions to see listed! http://www.rewards-insiders.marriott.com/message/2748#2748
Hi jose_oliveira. Here is a comment I wrote right after it was posted by anadyr that the hotel was opening:
my missionary friends in Toyko said this hotel has the most amazing views as well as being the go-to spot to stay for the 2020 olympics. Apparently Marriott did their homework on this one placing the hotel in a most strategic area close enough to all activities. I believe it is very reasonably priced due to the location as well because it is not directly in Tokyo but close enough for visitors to Tokyo.
Here is some info regarding things to do around the local area:
enjoy your trip.