Hi Spartana
My last year of work had a really bad schedule plus an 80 minute commute each way. I knew that with Missy that just wasn't going to work. I found a small inexpensive (not horrible, just oldish) apartment near work, and we did the work commute thing. I would go home Friday night with Missy and go back on Sunday evening.
Missy stayed in the apartment in her crate while I was at work - I put her in my bedroom, the room farthest from the apartment door. I got on a good chatting relationship with the lady who did the maintenance, and she said Missy never barked unless she bumped my door. Anyone else I asked also said they never heard her. This was a dog who had grown up in a house, was not used to people being so close that were not family or visitors, and barked at people who came to the house door, so I was happily surprised.
Yes the walking is the big thing. Here I have fenced part of my yard, and when Missy needs to run she can, or I throw a dog frisbee for her. There I had to walk her, we did a lot of walking that year. I bought a little bag at the dollar store to hold the poop bags and that was it. First thing in the morning and bedtime were the hardest - I threw clothes on in the morning and took her for a quick walk, and last thing at night was another quick walk before bed. If I had been sick it would have been really awkward - I would have dumped her on my daughter or have gone home where I could just let her out the door. I realized then that if I ever rent again I will need a house or townhouse where there is a fenced back yard, however small.
One advantage was this was a 50's building, 3 story, no elevator, just stairs. I had 7 stairs to get to the apartment door - so getting her out was easy. It would have been much harder if I had been in a high-rise with an elevator. I could have rented an apartment in a high-rise, I looked at several and the dog would not have been a problem, but this one had a better overall layout, and getting outside easily was definitely a plus.
It did help when I was looking for an apartment that she is incredibly cute and friendly looking, when I show pictures of Missy people go "so cute".