I was born and grow up in tokyo. So I’ve never thought about sightseeing in tokyo. But.. last summer I visited Tokyo skytree with my European friends and .. it was wonderful !!!
There are often nice events so please check it out !
If it is too complicated to arrange booking by your self, you can easily join hatobus tour. One tour example https://www.hatobus.com/int/jp/detail/a321/
Have a nice trip!!