Atami onsen
The hot springs are the point of Atami, strung along the hills above Sagami bay. Because Atami station is on the Tokaido Shinkansen, it’s close enough for an easy overnight — or even a day trip — without the long haul the mountains ask for. Note that the fastest Nozomi trains don’t stop here; Kodama trains all do.
Getting there from Shibuya
by shinkansen (Kodama) — about 1 hr door to door, about ¥4,860 one way
Shibuya → Shinagawa → Atami
A three-year-old rides free as an infant, but a reserved seat is worth the small surcharge so they're guaranteed a place beside you. The fastest Nozomi trains skip Atami, so plan around Kodama.
Shinkansen fares come from a fare aggregator, not JR Central's own page. They're consistent across sources, but confirm a live timetable and fare before booking.
figures from: ekitan.com (unverified), shinjukustation.com, JR Central / JR West (Smart EX, official)
by local train (cheapest) — about 2 hr 8 min door to door, about ¥2,190 one way
Shibuya → Tokyo → Atami
No reserved seats on the local, so with a tired toddler you may end up standing at busy times — the trade for the lowest fare.
Times and fare from a travel guide rather than a JR first-party page; treat as close, not exact.
figures from: japan-guide.com, trip.com (unverified)
by limited express (Odoriko) — about 1 hr 48 min door to door, about ¥3,770 one way
Shibuya → Tokyo → Atami
All Odoriko seats are reserved, so the child gets a guaranteed seat. One calm coastal ride with wide windows past Odawara — gentler than changing trains.
Fare is the base plus the reserved limited-express charge from JR East's pages; exact timing varies by service, so check the day's timetable.
figures from: JR East (official), trip.com (unverified)
about this place: japan-guide.com, ekitan.com (unverified)