What questions should I ask a lesson stable?

I recently found myself in a position where I need to switch over to another stable. I found one very close to my work (they also board, so when I get a horse I can also board there as well), and it's about five minutes from my old one (and how I found this one, I have no idea, was on a list though, but that doesn't explain my luck ). My current one is going out of buisness. There is hardly anyone there any more. I'm hoping to go there on my day off. And I just want to make sure this is for me. If not, I have a couple of other ones, but all are close to an hour away, and with the way that gas is........

I am so glad you asked. I need to know this too. My interest lies more in the line of lessons and trail rides and training with and for my ten year old son. I started to do some searching and asking around but I am still on the fence...so to speak.
I convinced him to wait until after school was out so... I have run out of delay reasons very soon.

I'm thinking, obviously cost. Cleanliness. Care of horses. Do they look healthy. Do the people look and act compassionate?
Are they the people I want my son to hang around with?

I am also thinking there must be some safety questions besides how safe is this? Got any clues?

What if it is raining on training or lesson day, do we still come?
All sorts of odds and ends run thru my head whenever I am driving. Maybe I ought to get my son to write some questions about what HE thinks we need to know. Hmm.