I have been to both Atami and Hakone. When it comes to scenery, I think you could enjoy the sea in Atami, and Mt. Fuji and Lake Ashinoko in Hakone. In Hakone, you can ride various kinds of vehicles such as mountain trams, ropeways, Odakyu Romancecars and sightseeing boats.
The vicinity of the railroad station and the shopping arcade in Atami are deserted and slack, and the hotels that went out of business look like ruins! The view from your hotel room might not be good, depending on the hotel you will be staying at...
If I had to choose between Atami and Hakone, I would decide on Hakone!
お礼
早々の回答ありがとうございました。とても助かりました。参考にさせていただきます!