I'm planning a trip to Japan for May of 2014. Ideally, I'd like to rent a place for 5-7 days and do sight seeing trips one area at a time. I'm looking for recomendations as to the best area to set up "base camp" that is accessible to public transportation lines and centrally located. Also, if I purchase a Japan Rail pass, can I use that pass to get around Kyoto? Frankly, Japan seems to have many different train lines and I'm unclear on what is what. Any guidance would be greatly appreciated!