Perhaps I'm naive, but I would've expected the folks at Y Combinator to go a little above and beyond so a parent with a young child wouldn't have to stay in a 'flophouse'.
In case it didn't come through clearly enough in the article, I should reiterate that the YC partners and my batchmates were super supportive and often went out of their way to make it easier for me to participate in YC events - offering rides, allowing Adam to tag along with me at office hours, helping to entertain him, and generally being extraordinarily patient and welcoming.