Spent a total of four days in Japan, which is not nearly as many days as I would have liked. No worries though because I know I will definitely be back. We flew into Osaka, then took the train to Nara for a day, and then spent the next two days in Kyoto.
If you ever plan on making a trip to Japan, especially if you plan on going to Kyoto or Osaka I highly recommend you to take a day trip out to Nara. It's an extremely easy train ride from either Kyoto or Osaka and we found that the train stations in Japan provide locker/luggage storage that comes in handy if you need to drop your things off while you go out and explore. Nara park is where you can go to pet, feed, and hang out with the deer. They are everywhere! I would also warn that some of the deer can get a little aggressive when they see you are the holder of their treats ; )