Just My Size Women's Slub Jersey Tunic Crochet Trim

Can someone help me out with sizing please? I'm 5'1 and about 200 lbs. Would a 1X be about accurate?

How many inches are the sleeves?

The item description says it has a "button closure." Where is that on the blouse, I can't see it in any of the photos?

Does the crochet itch or rub against the skin on the inside? Plus sizes are wider but not longer, why? I want to wear it around the house