How to contact Fu Gui Hong Farmhouse in Beijing?

I'm thinking on visiting the Mutianyu section of the wall but I would like to get up there (to the village) the day before hiking the wall, stay that night in a hostel/guess house and then waking up early (around 5:30) to get the sunrise. How can I contact the Fu Gui Hong Farmhouse for accommodations? Also, can I hike from Fu Gui Hong Farmhouse to tower 18?