@Theresa275 Well, I'm a coffee drinker, and no, that wouldn't qualify as a coffee maker to me. Very few coffee drinkers, in my experience (and I'm 70, so I've had a lot of years to observe) are the least bit interested in drinking instant coffee. If I were a guest and you said you provided coffee and what I found was only instant, I'd be disappointed and in fact, I wouldn't drink it at all.
I absolutely agree with you about the Keurig K-cups, though. I would never use one myself to brew coffee, nor purchase one for guests. There are all kinds of ways to make coffee that don't involve adding to the world's garbage problem. I use a French press myself (many are glass, but for an Airbnb, I'd suggest the Bodum stainless steel, insulated ones- nothing to break and can be stashed away in the cupboard- you just pour boiling water from the kettle into it), there are the Italian type you fill the bottom section with water, the basket with coffee, and set on the stove ( but not everyone knows how to use one) or you can just get something like a Mr.Coffee-type coffee maker, which does use paper filters, but you can get natural ones that aren't bleached and are easily biodegradable. But if you don't want more appliances on the counter, I'd say go for the Bodum-basically indestructible and makes very good coffee.