If a 'custom map' server is created i'd suggest the map cs_motel_tws!!
Link:  http://www.gamebanana.com/maps/106757
Also heres another map de_gambaru!!
Link:  http://www.gamebanana.com/maps/11661
And finally and you guys might be shocked(this may not be created by valve but still awesome map!), de_dust3
Link:  http://www.gamebanana.com/maps/79453