nangguide.vn@gmail.com his services is excellent! his price not much different with other.if u choose company tour guide, they always change guider in each place like different guider from tam coc, sapa, halong bay or hanoi city. i prefer private tourist guide, we more close to each other and he will understand more on you and take care all of our needs. he is humour and patient guider, he looked of our needs and he work as tourist guide 10 years. u wont regret if u choose him. but u mus ... ...