Sorry this is probably a bulkier answer than you’re expecting but I didn’t know which level you meant so I’ll answer all I think you could mean. I’m on the ground floor of the building, I don’t remember what it’s name is, but there’s a store and a protectron station in the basement level, and I only found that raider and maybe another in that area above. I’m playing on survival difficulty, and to me every minute feels like an hour as I move forward without saving so I couldn’t give you an accurate answer to when I last saved. And I was roughly level 102 here. Slight edit. The building was the one where you get the pipe grenade launcher from the creation club stuff.