Closely look at the fridge and oven. Look for fire detectors and carbon monoxide detectors. Check to see if the windows open. Have a good look in the closets. Try and evaluate how thin the walls between the bedrooms are.
Thin walls can be a major source of squabbles.
If you have any pets, make sure they're allowed. While different landlords use different guidelines for qualifying prospective residents, these figures will help you determine the amount of rent you should be allowed to afford. Once you make a decision to rent an apartment, the landlord will have you sign an agreement known as a rental lease. This lease is legally binding - a good rule of thumb is to never sign a lease if you are not comfortable with, or do not understand all of the details. Read the lease.