When I started MA it was the most common thing to do for a teacher to rent a village hall or community centre for one or two nights a week.
Over time it seems that more and more teachers are opening dedicated MA gyms and offering lots of classes along side the base arts.
There are many other training areas possible, outside in a park for example.
So
Where do you train regularly?
What are the pros and cons of your training area?
What country are you located in? - just for context.
I don't currently train regularly. For the past 3+ years, until a few months ago, I had a small program I taught first at a YMCA, then at a government-run athletic center. The advantage of the YMCA was there were people around. It didn't actually help much - rarely did anyone stop by to even look at class for a minute - but it helped when I wanted to offer a short seminar series to bring in new students. At first the Y handled registration and I let them keep all the money. They didn't like the hassle, so I took over registration but they didn't charge me since I had let them have all the money for a while. They needed the space for other things, so I found the athletic center. I still had to handle registration, but they had good mats for me to use (I have a very limited set of cheap mats), and only charged me 25% of whatever I brought in. Some positions changed there and they took away the mats (and were going to charge me if I had no students), so I had to walk away. I thought there would be good foot traffic there, but there was even less interest among the folks there than at the Y.
I've looked into other locations (am still looking - need a new home to restart the program). I've talked to YMCA again, checked with several of the fitness facilities. I'm now planning to visit around to local MA school/gyms to see if any have open class slots they'd be willing to let me fill for them.
I can't see trying to teach out in a park as a primary location. That'd mean no class if it's significantly rainy (most parks around here get a bit flooded when it rains), no class for part of the winter (during the depth of winter, temperatures don't often get much above freezing). While Summer would be possible, the combination of all those canceled classes, plus the heat, I'd never be able to keep a program going.
The dedicated MA school is appealing. At both places I've had my program, storage was limited. At the athletic center, it was across the gym, then up some narrow stairs, so impractical for getting stuff to use for a few minutes. So, I carried a big duffel bag with a few weapons, sparring gear, uniform (and spare), office supplies, belts for promotions, etc. At a dedicated school - even a cramped one - you can have the common stuff stored right in the room, and other useful supplies stored in closets and desks. Most of my training time was spent in dedicated MA spaces, and I miss that.