Things I consider.
1) Security - what is the area like. I will never live somewhere I don't feel safe walking outside of after dark. Was attacked in a rented house by a gang of three with crowbars, and had my car stolen and burnt out - so never again will I live in an area where I fear for my safety/security 24/7). I use crime statistics (and types of crime) to ascertain the danger levels, as well as the overall state of the area (so lots of broken glass in the gutter means high car crime, bars on windows/doors and boards means high burglary. Blood splats on pavements means violence). When I was younger (19-22) I lived in places in UK cities which my friends referred to as 'Baghdad'. It
was that awful (bars on all windows and doors, it's also where the attack happened - in the 20 mins my friends nipped out to pick some beers up and didn't lock the front door grate behind them - and the interior door wasn't locked either).
NEVER AGAIN.
2) Insulation - how well insulated is it? With rising utilities, the difference between high and low can be vast. In the UK gas/electricity can start to cost $2000 per year, especially if you live in a poorly insulated place. A well insulated place with energy efficient bulbs and appliances can, by contrast, cost as little as $700. These days it is a requirement to have your homes energy efficiency rating
3) Storage. Is there enough for my junk, otherwise the apartment looks messy and cluttered.
4) I don't care for the size of bedroom much. Just as long as it has a good bed (or they'll replace the mattress if it's been buggered by previous tenants - which I have had done at 3 places I have rented), good storage for clothes etc. Maybe if I kept a computer in there I'd care more about the size, but generally - in the bedroom - I get dressed and sleep. Why have excess space?
5) Bathroom - a GOOD shower. V.important to have a great flow of hot water. Nothing better than a great shower. I also flush the toilet when looking around. Sounds weird, but one place I stayed had a very modern design toilet - but it acted like a fountain. Flush the toilet and a big splash of water would hit the ground around it. Guess women may appreciate it trains a guy to put the lid down - and to clean the toilet on a near daily basis - but it wasn't great having to tell everyone when they go to your toilet how to use it.
6) Louge/living room - good sofa to sit on, good space to have my stuff in. Since I spend most of my time there, its important it's a great place to be
7) Light, clean and airy - natural light preferable, windows that are secure but able to be open to refresh the place.
8) Kitchen - all appliances working, logical layout, and enough storage for all things I have. Also cleanliness. One place had an extractor above the stove, but the extractor had no outlet to the outside.. so it just blew everything around the kitchen. It meant the cupboards around had a very sticky tar like substance (condensed fat basically) over the tops which was disgusting.
9) Great internet. Ask the neighbours, and check with various companies on their phone lines (if they're kind enough to let you know their phone number!) and/or post code. If it's going to have shit internet, I am not going to live there. I don't own a TV after all... I watch it (US TV mainly, about 4 programs a week) via the internet
10) Neighbourhood. If it's noisy, forget it. Need to sleep.
If I owned a car, parking would be a high priority on the list (the list isn't in order really, number 1 is always safety).