The flip side of the get-out-what-you-put-in coin is: put in demands and you'll get demands. Put in negativity and you'll get negativity. You've got to keep a finger on your own pulse, because goodwill can be destroyed faster than it was be built. It's a small company, so there's not a lot of room for unhappy people. I've seen people burn through their goodwill pretty fast, and it's both sad and unnecessary.
If you think you already know everything, or you can't handle criticism, you're gonna have a bad time. If you care about your identity as a great artist (your idea of what's right for a shot) more than actually delivering good work (the client's idea of what's right for a shot), you're gonna have a bad time. If you're on the fence about being in the VFX industry, you're gonna to have a bad time. If you're more interested in strengthening yourself than in strengthening a team, you're gonna have a bad time. And obviously, if you're gonna have a bad time, you're gonna find lots of cons.
If the above applies to you, then you shouldn't work here.
Aside from that, work/life balance is typical for the industry, which is to say "not the best." Task overflow happens, delivery deadlines happen; this is more of an industry-wide problem, but don't expect it to be immune to it here. I've worked at places that are hard-out at 7pm no matter what; that's a mixed bag anyways, and it ain't here.