Hotel Kowakien to Odawara Station

How do you get from hotel to Odawara Station? Also, how long does it take and approx price

By direct bus. By Hakone Tozan Bus it takes about 40 minutes and costs around 810 yen. It is fully covered by the Hakone Free Pass:
http://www.japan-guide.com/e/e2358_008.html

I took the mountain railway, the station is a short walk down from the hotel, the staff are very helpful and gave us clear directions.
The mountain railway is beautiful, but it does take a little longer than the bus so great if you have time to spare, still I would recommend this as the scenery is stunning.
As far as I remember this was covered in the free pass