RE: Visiting the northernmost point of Vietnam!
I just did a Motorbike trip from Hagiang to Yen Minh a few days ago (I'll be posting about it today or tomorrow). It is beautiful up there, with crazy roads. FYI- There are numerous hostels in Hagiang. I spent about four days there. Glad you had a fun trip. I went to Halong Bay yesterday and I'm headed to Nimh Binh today! Enjoy your travels! Vietnam is beautiful.