Summary

Ok, let's start with the extra day I had to spend in Hanoi. I really loved the first 24h there, but I have to admit that the city annoyed me a little bit the second day. I didn't have much else to do, it was rainning, I struggled a long time trying to fing somewhere where I could unload my pics and save them but without succeeding, in short I felt a bit stuck in the middle of one of the busiest place I've ever been to. I was happy that the owners of my guest house were really friendly so I could chat with them.
Then the day after I could go to Halong Bay. I had talked to a lot a people, vietnamese or western, that told me to take a tour to go there, unless I was ready to get ripped off and to spend a lot of time there, so I did so. I had to forget the idea of deep water climbing by the way, I would have needed a couple of weeks for that I guess.
The first 24h hours were nice. We were on a boat, 15 people. We were havings our meals on it, we could go swiming arround, kayaking etc.. And even if the harbour was full of boats, Halong Bay is big enough so that we were quite alone in the middle of all the islands. Landscapes were really amazings.
Then after a night spent on the boat, I started my day seeing the staff of the boat emptying the bins in the sea... well... hard to stand but you can't do anything on the moment. Then they took us on a big island, we had a short trek on the jungle, and then the tour got crap. Food got bad (that's probably where I got poisoned), that was full of tourists, although most of them were vietnamese tourists, and the nice people of my group left, so there were only loud and heavy dutch people, and a jumpy american couple. I split off the group for the afternoon cause they went to the most crowded place... I can't tell everything, but in short I was keen to go to the mountains.
So here I am, in the mountains, 1500m high. It's quite cold here, I'd say less than 20°, quite appreciable. Today I feel way better, so I'm off for a trek till tomorrow. I'll tell you about it later, I'm sort of in a hurry right now!