If you plan to climb Mt.Fuji, you can go to Subashiri trail from our Guest House as following.
Fuji-Hakone Guest house
↓ 20 minutes by bus
Gotemba station
↓ 1 hour by bus
Subashiri trail 5th station
We strongly recommend that you should be well-planned and well-prepared such as proper shoes, clothes, and so on when climbing Mt.Fuji. It is not easy, it is sometimes dangerous depend on weather conditions.
Please buy or prepare things for climbing Mt.Fuji before coming to Hakone since there are not enough shops to prepare them in Hakone area.
Please look at these websites which mention detailed information of climbing Mt.Fuji before you make a plan.
Climbing Mount Fuji:
http://www.japan-guide.com/e/e6901.html
Mount Fuji: Subashiri 5th Station (Subashiri Trail):
http://www.japan-guide.com/e/e6928.html
Good luck for your climbing !