Okay. He'll mostly find all the same stuff that Strange and Eruka did, without the inconvenience of being chased by roombas. He'll be able to get into the vents no problem, and since it's dark in there, it's all rather intuitive.

He'll see the same teleporter set up as Strange, and will come to the same determination: the sector is separated from all the other ones, with no connecting vents or anything else. The current sector is about the size of a shopping mall.

The one downside is that there is a lack of foot traffic at night, meaning no one comes through the teleport and gives him access. It can wait basically indefinitely, though, so depending on how long he's ready to linger, he might get an opportunity.

Alternatively, he can look for something else.