Kids, you say?
This seems to be where the two guys at their desks are (portrait oriented windows above; landscape oriented windows below), with kids playground p.o.v., as you kind of say.
Who would have an office or museum in an alley? Also, noticed the solid sliding door where the ''kill room'' would be?
Those stairs don't look up to building code. At least you can get them on a building violation.
Yes kids, their biggest turn on unfortunately.
Precisely. Museums are usually in prominent streets. I bet it hosts "video installations" of the kind the Podestas had to build a special basement for because the videos weren't suitable for public view.
...and we can see the red bricks under the white paint.