Looks to be around 170 EU ($227 a night and includes 1 way complimentary trip from the airport (and you can actually buy 2 way which isn't terrible), breakfast and wifi *by the by, additional 10% off your stay if you pay in cash up front when you check in.
The bungalows are basic but it makes them amazing. There are no windows and doors, there are comfy beds and mosquito nets, also a private bathroom. Great relaxing place for someone who can survive with cold shower and no wifi. Staff is great too!
It's around 2.5km from Phong Nha town centre, but they have a free shuttle on check in and out. Place is beautiful, peaceful, you can hear the frog music in the evening and see a sunrise just from your room. Staff is very nice and helps with everything making sure you really enjoy your stay.