If you're flying alone with no large carry-on and you turn your brain off for an hour then it's not too bad. If you're a group or need overhead bin space then it's a lot worse.
My strategy when I fly them is to pack a tiny bag that fits in the seat in front. Wait for everyone else to board without getting into line, then take whatever seat is left. Turn brain off and wait until I get there. It's not worth standing in a queue for an hour and fighting the masses to get a better seat for a short flight alone.
The seats don't recline (which isn't really a bad idea for such a short flight). The backs have very little padding. The PA system plays very loud advertisements the whole flight selling food, bus transfers, bingo tickets, whatever they can hock. You might want earplugs just for that.
DO remember to get your passport checked at the *check-in* desk. The GA won't verify ID unlike every other airline in the world.