Hi, does any body knows about a descent, not too fancy/expensive apartment or condo in the Sathorn area? Something around 10000 B will be ok. I appreciate any help. Thanks in advance.

Sathorn is a pretty upscale area, B10,000 is somewhat unrealistic for an apartment or condo there. Maybe a single room but even that may be tough to find.

Try AEC Apartments off soi Narratiwhat (sp?)

10,000 baht will have to be really old low rise buildings, think 7-8 floors studio or one bedroom, most don't advertise online you will have to walk through the sois to find them. If you want newer apartment, I suggest looking around BTS On nut to Udom Suk area. At this price range it will still be studio and one bed.