I like novellas. I like reading them. I like writing them. Alas, I don't write them very often. As much as I enjoy this length of story--more developed than a short story but lacking the tedium of a novel, they're very hard to get published anywhere. I just finished one. I've got another one in the ebook Airship Stories that just came out. They're as different as night and day. One involves a steampunk airship. The other deals with spooky stuff. Alas, I may have trouble finding a home for "Malevolent Entities." Time will tell, I suppose.
Never really been sure if a novella is italicized or put in quotes. Short stories go in quotes. Books go in italics. Just like everything about novellas, they're in a no man's land in so many way.