If you’re going to be there a while, it should be comfy.
Working from home sounds awesome until you actually have to start doing it. It’s at this point you realize that your home office is woefully under-equipped for daily professional work, and that’s assuming you have a designated home office and don’t just keep your computer in your bedroom or living room. Even if it’s a temporary arrangement, you want your home work space to be a little more than just a desk and a chair, just like you want your office work space to be a little more than a desk and a chair.
Consider, in addition to an ergonomic office chair, a few strategically-placed “comfy zones” around the room. Sitting in one spot for a really long time can wear on you physically and emotionally, so you want to have a few other spots you can switch to over the course of a day. Obviously, this is easier if you have a laptop instead of a desktop computer, but in a pinch, you could work a computer from anywhere with a wireless mouse and keyboard and a big screen. As for the actual “zones,” make a little pillow pile or get a beanbag. Something to sit on, but not in the way you sit at your chair.
You also want the room to have personal touches. Since it’s in your house, there are probably a few already, but you want to keep a few in your direct peripheral vision, just as a fun little breather for your brain. I’d recommend a little statue, a small houseplant, or maybe an executive toy of some kind like a Newton’s cradle or fidget cube. I would advise against keeping a TV or your phone in your line of sight, though, unless you need them for work; they can be a bit distracting.
The appealing factor to working from home is working in a comfy spot in your jammies. Remember, though, as important as comfort is, you’ve still got work to get done. Try to strike a balance between personal flair and work convenience.