You often find Hakone's hotels built with hot springs. However, if you are looking for a short and relaxing trip, you can find their hot spring spa resort. If you are not used to getting yourself naked in public hot spring, you can opt for private hot spring. Some of the private hot spring rooms are open air too!
Ideally, you can have your own private bath room overlooking the nature beauty. Sounds nice, isn't it? One of my recommended hotspring resort will be Hakone Yuryo (箱根汤寮). It provides free access to bus station and it's easy to find at Hakone. Furthermore, you can make your reservation online. However, their website with more complete contents are in Japanese. I will make necessary explanation here to guide you through the reservation.
This is their English website - http://www.hakoneyuryo.jp/english/
(You will find nothing informative in here)
You need to switch to Japanese site.
After that you click on the left side, then you will find private hotspring bath rooms to choose from.
email@example.com. It's advisable to make your reservation 1 month before your departure.
For transportation access
You can get more information about free shuttle to the resort at their website.
After their staff confirmed the reservation, you can look forward your trip to Japan and enjoy a relaxing and rejuvenating day at Hakone Yuryo Hot Spring Resort!
We did it last time and it was high recommended for first time experiencing hot spring. We enjoyed the privacy and spacious private room given. Hope you enjoy it too.
*For transport arrangement, you can visit Hyperdia website and search for "Hakone-Yumoto" station. We used it to travel everywhere in Japan!