It is very nice for hiking. However, because there is farm on the top of mountain. You can see many houses and wires and caws. So, feel little less important. However, it have great view of Mt. Fuji.
Mt. Ono (大野山, Onoyama) is one of the best 100 Mt. Fuji view spots in Kanto area. I has 753m high (2260 ft.)
This is the one of the great one day hiking course with great view of Mt. Fuji. Entire course is about 3 hrs. hiking. At the top of the mountain. You will have 360 view.
There is also caw farm on the top of the mountain. You can drink fresh milk.
Tourist Info.
You can approach to the top by car. There are many parking and restroom.
Access
0. at Kozu Station.
1. use JR Gotenba Line to Yamakita Station (26 min.)
2. use local bus to Onoyama Iriguchi (5 min.)
3. walk along with Onoyama Hiking course (2 hrs.)
1 hr.
New Wave Samurai Movie. 
映画好き集まれ！ 
It is very nice for hiking. However, because there is farm on the top of mountain. You can see many houses and wires and caws. So, feel little less important. However, it have great view of Mt. Fuji.