Eight years- for my work. My Spanish is good (thanks to being here for ages) although I still don't get a lot of slang.
Every day life is great. There's pretty much no expat community, but everyone has been welcoming and kind, and very accepting of us all, so we've blended in a lot more easily.
There's more paperwork here too, I think, but in general, everything is convenient, the supermarkets are good, the discounts at TÃa are excellent. Buses are a bit shitty, but travelling around and away from here is easy in general. It's a very safe town, compared to a lot of other places, like Quito. We don't have a car, as taxis are very cheap (like, we can go to the other side of our town for just two dollars).
Life is laid back, slower, than before, too. I really enjoy living here, it's definitely home, our younger DC were all born here too.