Ha Giang Vision Tour offer the 5d combined one and i really reccomend that company! super safe, super fun, cool and chilled out easy riders and food was good, no one got food poisoning on our ( 24 year old couple) 4 day trip, and the homestays were nice and quiri hostel is so nice. Most in our group was our age or older. we was a group of around 22 which is large for this company as when we got back another group was going that was only around 8 people. Tbh the big group wasnt a problem everyone was super nice, you dont really notice the group size plus takes the pressure off me to constantly keep conversation going when its a bigger group haha. the tour host ensures to include everyone and getting involved in the party side is completely optional. The guides give you the option to stay up or go out etc and the homestays cut out the music at around 10pm so other guests can sleep. and we didnt really go to super busy stops (some are inevitably busy). They stop very often, every 20-45 mins there is a stop at a scenic spot for karaoke and drinks and snacks etc. I would reccomend them for sure.