I liked the premise, it reminds me of a certain horror game I can't remember the name of. The creepy atmosphere was pretty well done, the sheer darkness and silence never fails to creep me out with these sorts of things. I would recommend a little more ambience though, especially to accentuate the change in locations (being in an alleyway should sound different than being in a diner, etc.) Maybe some more hum from the lights? Or some crickets in the crop section.
I think the main area at least could use a tad bit more lighting too, since I was running out of flashlight battery the entire map. Real dark maps like these need a good balance of light to no light in areas of interest so you're not constantly cursing the battery system for killing your light, hehe.
Some of the little touches you added were nice, like the light shafts in certain areas and the glow from headlights of some vehicles, it made the visuals pop a little more and look more refined. I remember you pointing that sort of stuff out in one of your reviews, so it makes sense you'd value it here when creating your own map.
There was a point after playing for a while already where I realized this map was way bigger than I thought. I was fighting in a room for a while, and when I stepped out I was in a different area that connected to the main area, and there was way more to see. This was a cool moment and it was something that the pitch blackness of the map lent itself to pretty well.
There was a place where I could look through the wall into the diner next door, because the faces for the wall weren't being drawn (it's the building with the red door). I also don't know if it's intended for the players to start with weapons, since you find weapons from exploring (and because why would you bring a gun to a laundromat?).
Without spoiling anything, this map had more than I expected and it was pretty good. I enjoy maps like this since they're more exploration based, that goldsrc feel still scratches a certain itch all this time later. I hope you continue to update and release more, especially like this.