I made this map looking at pictures of the original cs_mansion from cs 1.6 in the Internet. Hope you like it. P.S. I want to make a second floor, but think how best to do it.

Make maps, keep making maps, but don't upload them til' you feel really impressed by yourself.
At this day I probably made more than 100 maps, and look how many files I did publish (18, soon 19)

well, agree with FDK, but maybe people so love this map so they can't leave it as their bad attempts to do it well :C

The most terrible thing is standard tileset on each new map.
I thought to do the similar map to cs_mansion, but i'm too lazy to draw tiles due to some reasons.
Details are important things too, but since you're newcomer is common thing. Improve your mapping skills m8. I can't say i like it.

well it is almost good for the Mapping, but the tiles are horrible :'))

not bad but it could be better, I advise you to use custom tiles, or tiles for example from other beautiful maps, standard tiles are no longer in the subject, but there are people who know how to work with them, but unfortunately you are not included in their number

Let me begin:
Bad tiles, this map has been done like 4 times already, never use things like "2d" in map names, the map size is awful, the walls in the "sewer" part looks terrible.
I know I sound too agressive but believe, we have seen so many times this same map and people just don't understand 2 things: default cs2d tiles just sucks + this map simply doesn't work for CS2D, you can't make a good version of this map.

Next time you should check the Search/FAQ section and look for the map you want to make.
Extra tip: Almost EVERY cs 1.6/cs source/cs go popular or standard map has been done, try making something by yourself.
Regards.