In reply to tomthetraddad:
I was in Tonsai, Ko Phi Phi and crazy horse.
Tonsai is a lovely spot but all you've heard about the polish is true. Its insanely polished on anything 6B or below. The place is great though and I still really enjoyed it. I was there in June and yes it is very hot, humid and sweaty. I wouldnt worry much about the rain as it lashes rain for a bit and then dries up quicker. Its not like its raining all day or theres hurricanses
Ko phi phi has limited climbing and the place is a tourist hell. Didn't like it much
Crazy horse is a much more climeable crag with lots of routes but a very different experience. There are some local places to stay I think but most people stay in Chiang Mai which is about an hour and 20 minutes away from the crag. the city itself is a city like a lot of others, not like the beach/jungle stuff you get in tonsai so it depends on what your into.
I would recomend though if you are going there to look into the bus service operated out of the Chiang Mai climbing shop. I did it on a scooter and would prefer free soloing a E8 on a rainy day with my eyes closed than ever face rush hour in chiang mai on a scooter again.