Helen,
Could be. I'm average height (or maybe a little shorter) so I don't have much insight into this. Frankly, "not much" is about all the insight I want into the psyche of a large pink-and-silver accordion.
That's right. I changed to a similar size instrument in understated black-and-white, but now I'm trying the concertina. When I was a teenager I played the piano, so (I'm sure I'm not the only one) to play folk music I took up the piano accordion. It's a folk piano, right? Sometimes I wish that somebody had said to me "no no no, the harp is the folk piano".
Anyway, I switched to the concertina because of my inability to get pleasing sounds out of the bass end of the accordion.
It's a Stagi 30 button English. Plain brown bellows, wooden ends. My philosophy is "if you're a lousy musician, don't draw attention to yourself". Once, when I had the pink and silver monster and I was a worse musician than I am now, I joined an impromptu jam session at a festival. I was playing chords, relying on watching a guitar player's left hand (beause my ear isn't very good), using about 2% of the available notes and stumbling frequently. At one point I noticed that the melody had stopped and everyone was smiling at me - it was my turn to improvise a melody worthy of O'Carolan! I don't want this to happen again.