I moved around a lot during my academic career. Each time I moved to a new school or housing situation, I had to rethink my city mobility. I prioritize proximity to public transportation. As a part of my house/apartment shopping process, I think through the different places I would go in my day-to-day life: school, work, the grocery store, the mall, the park, etc. I practice getting to these places from the homes under consideration, figuring out the closeness of trains, bus lines, and talking crosswalks to the routes I might take.
When deciding between locations, there’s usually some give and take; for example, a longer walk to campus but a shorter walk to the bus line. It’s important to get a feel for which conveniences and inconvenience matter most to you, and to chose your housing with those in mind.