Japan rewards planning more than most places. Trains, hotels and restaurants run with precision, and a trip built around them feels effortless. Leave it to chance in cherry blossom season and you will spend it in queues.
A first trip usually runs Tokyo, a night or two in a hot-spring ryokan in Hakone, then four nights in Kyoto with Nara as a day out. Second visits go further: the art islands of the Seto Inland Sea, the Kiso Valley post towns, or powder snow in Hokkaido.
The honest caveat is crowds and cost at peak times. Kyoto in early April and late November is very busy and hotels rise sharply. We plan dawn starts at Fushimi Inari and quieter temples such as Honen-in, and forward your luggage between hotels so you travel light on the trains.