Alright, some constructive critisism coming up!
Use lowercase for map names, all other maps do, so should yours.
I went ahead and decompiled the map as I don’t have CSS installed.
You have a lot of stuff you could func_detail, would make the map compile faster for ya. (Like, always func_detail stairs)
Some clipping errors here and there.
The bottom carpet floor has a texture scale of 2. The normal texture scale is 0.25, see my reply about the texture lock and fix that.
Easiest way to fix this would be to select your whole map, select the texture tool and set texture scale to 0.25 on XY and apply.
func_buyzones doesn’t have to be hollow, just create a block with the TRIGGER texture and make it into a func_buyzone.
You’re improving, but still have some things to fix.