If you are looking for a quick getaway you need to check out Nobi Beach House, just an hour from Tokyo on the local trains, Great place to chill for a weekend or so, 10 minute walk from the beach and the mountains, and I do recommend trying Jude’s (the landlady) cooking !! Excellent.
5-4-29 Nobi, Yokosuka-shi, Kanagawa-ken
Nearest Station Keikyu Kurihama
050.3103.4548 (IP landline)
080.3395.5157 (mobile – but the IP line gives better reception)
By train –
Get on the Keikyu Line bound for Keikyu Kurihama or Misaki Guchi which is further down the line) from either Shinagawa or Yokohama Stations.
Get off at Keikyu Kurihama and wait for pick up outside the McDonalds !! Easy.