We asked Kampa Tour to organize a 4 days of hiking trip in the Ha Giang mountains, with overnigh homestay (within the Red Dao ethnic group). 
The experience was just incredible, very strong, both in terms of landscape and on a human level. Here is our detailed feedback: 
- Upstream organization with the agency: very simple, clear and personalized. Easy exchanges with the agency and always quick and appropriate answers !
- Organization of the days: the route and pace of the walk were well suited. The slightly longer lunch breaks were appreciated because of the heat. Luggage transport was very appreciated (we usually carry our own backpack). The meals were well balanced, very varied and we were able to discover many Vietnamese and local specialties. The transport by car from Hanoi was very good, our driver was smiling, friendly, and seemed very experienced in mountain paths.
- Guides: we had two guides: one guide speaking fluent French and a local guide. This duo worked very well, and seemed well balanced and essential to us.
- All meals were shared with families. We spent very strong moments with them, in immersion, allowing us to really understand their way of life. The families and guides were able to integrate us easily, put us at ease, and we felt very well received and accepted. Spending these friendly moments (including a memorable karaoke!) was a very powerful experience for us. 
 - We were totally immersed in the heart of the mountains for 4 days, without meeting any tourists. We felt very privileged, close to nature and the people. 
 - The guides were able to share a lot of knowledge with us about plants, medicinal plants, fruits, vegetables, fauna, spices...
We strongly recommand this agency !