If you like markets, specially the markets of southeast asia then you should really go to Chiang Mai.
It´s a heaven for market lovers.
There is the normal night market called the night bazaar, the arusarn market, sunday market when they close of the entire old town and the saturday market.
The saturday market is really big and there is some bargains to do for sure.
Chiang Mai is a beautiful town with lots of flowers and the river surrounding old town and the Mae Ping to the west.
Chiang Mai is a city on the north of Thailand with a population of 170.000 people.
It is very easy to get into Chiang Mai, you can take a flight, train or a bus.
The city is not only filled with markets but there is plenty of Wats as well. If you have time to spare when you visit Thailand, please considder visiting Chiang Mai, it will so be worth it!
If you want to know more about Chiang Mai the Wikitravel is a good source for info.