Only way to find out is by riding a 250, they are great little bikes and do a very good job of teaching the fundementals though not for everyone. Even the 500s are a bit bigger and can actually get out of there own way. I’d recommend starting on a SV650 as I’m sure Vlad would as well, great little bikes. I actually got one last year to supplement my SS so I could ride sometimes worrying more about my form and being smooth than my throttle and brake control.
I started on a '93 Katana 750, not the best beginners bike but it was much better than starting out on the Daytona 675 I have now, in my mind, and I dropped it at least once getting used to how to handle a bike.