On 1 servers with real players, out of 6 Steam servers that run it now, farms and empty ones included. Checked 01:14 UTC.
cs_mansion is a community hostage rescue map. It is not one of the maps that come with the game, so servers send it to players when they join.
Over the last 30 days cs_mansion was the #179 map on CS 1.6 Steam servers, with 3 real players on it at any moment on average - 0.1% of everyone playing. It ran on about <1 servers with real players at a time. Right now 10 people play it on 1 servers, most of them on servers in Argentina. It is busiest on Sunday around 17:00 UTC and quietest on Wednesday around 05:00 UTC.
Right now 10, on 1 servers from the Steam server list. Over the last 30 days it had 3 real players on average at any moment. Fake servers and bots are not counted.
On Sunday around 17:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: #06 [Alta-Fruta] Mata al Traidor [TTT] [www.altafruta.net] (10 players), ARTE 1.6 server (0 players), Counter-Strike 1.6 Server (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_dust21,625 players on average
de_inferno206 players on average
de_dust2_2x2116 players on average
de_aztec89 players on average
fy_snow78 players on average
de_nuke70 players on average
de_dust59 players on average
cs_assault53 players on average
de_mirage51 players on average
de_train46 players on average
fy_pool_day45 players on average
zm_foda42 players on average