Answers
Sep 18, 2011 - 10:40 PM
I'm not an expert, but somewhere in Level 2 Sonia explained, as you say, that 'ser' forms can be used for places that are permanent (such as the apartment or, really, the bank). However, 'estar' can always be used for locations, permanent or impermanent. So, neither is wrong for permanent locations, but only 'estar' should be used for impermanent ones (according to my understanding).
Sep 19, 2011 - 01:13 PM
Great explanation Karen. That's exactly right.