Can someone from Bangkok help me with info ?

I am travelling to Bangkok from India for L-2. As on date I do not know where will be exam held. I believe it was Bangkok convention hall. Is it same every time ? Are there any budget hotels around that area ? I am not looking for a 5 star etc., but low cost decent budget hotels ? Also I would like to stay for one more day for sight seeing… What are the options? Are there any tour operators who take us around and show places in and around for a day ? Your help (information/links) will be highly appreciated. Thanks

It appears there is nobody from Bangkok doing CFA …or they are not looking at this knowledge bank (AF site) …