The nearest town for flights, buses and trains is Dong Hoi. To get to the Homestay from Dong Hoi you will need either a private car which costs around 600,000 vnd per car, or you can arrange a pickup with Phong Nha Farmstay/Easy Tiger who may have cheaper options depending on how many people they are picking up. We can book the transport for you if you let us know your arrival time.
The same applies for getting back to Dong Hoi when you leave.
Contact Oriental Sky Travel in Hue for details of transport from Hue to Dong Hoi or Phong Nha. (firstname.lastname@example.org ) Or for any help with hotels and tours in Hue.
There are now several ticketing agencies in Phong Nha town, who can arrange onward travel for you, by bus or train.