Here, though there’s more than just public transit - there’s a huge shopping mall/complex just half a mile north of this area. That’s a very reasonable walking distance for nearly everyone, especially given how flat this area is. Of course, you still have to navigate 3-4 multi-lane highway crossings, but at least it’s close.
Out of curiosity, I googled how many people it takes to support a single grocery store, and the top 5-6 links appeared to suggest between 3500 and 5000 people are needed. That sounds pretty close to my town, though we have a couple of monster stores so we may be closer to 8000:1. Restaurants and bars are going to be similarly constrained, though, so the diversity of options in such a small apartment complex will probably stay on the lean side (again, given little or no on-site parking and a generally car-centric city surrounding the area).