Unlocking Haunted House Hideout (solved)

Hi, already a couple hundred of maps in, and still no luck.
I can't manage to find a lot of information about it, such as where it spawns in the map, or the average number of maps needed; so if you have more Data, I would appreciate.

Edit: Ok cool, found it, after about 300-400 maps.
If anyone is interested, here is where it spawned in my map:

Thanks so much for posting this image,
it helps immensely when figuring out which Maps to actually run and which direction to go and what type of Mini Map shape the map is for the Hideout Spawn point.

Thanks to this image, I know that when I spawn into the map, if the portal is on the right-side of the map, I just exit the map and immediately load a new map.

I have also run about 150 Haunted Mansion maps so far of Tier 9 by converting all my Tier 9 Maps with Horizon Orbs to Haunted Mansion.

Map tiers in my experience finding out hideouts make no difference. I found the Dig Map Hideout using Tier 5 maps.

So far I have found the Hideout Mini-Map Layout only Once.
Instead of getting the Hideout entrance, I got bad luck and it sadly had the Vaal Entrance where the Hideout entrance could have been.

The starting Portal is the South Portal and you simply run to the right and see if you can exit into the Courtyard and if the Hideout Extension has spawned in.

This saves a ton of time having to guess or clear the whole map to check if the Hideout spawned. It seems like Hideouts can spawn in different locations on the map, but knowing this location just speeds up trying to clear the whole map and we can head right there and check if it spawned otherwise load a new map.