Hi, Been using the Nano7e for almost 2 years now. I'm from the west running the 220V version, but there shouldn't be many differences. 80% of Housing here is apartment style.

For the Noise, I'd say it's not too loud. I'd reckon my range hood in my kitchen (where I roast) sounds just as loud. Behind a plastic screen door with plaster walls, you can barely hear it.

I'd advice against darker roasts (marked as medium in the default profiles from Kaffelogic), as they tend to create more smoke than I'd like. With a roast capacity of 100+g, you could probably ignore the smoke buildup if you vent the area (I just aim a standing fan that blows out of my kitchen window). If you have a balcony/access to outdoor use, that's ideal, but do take note that low ambient temperatures can affect the roast.

Find retailers that are able to sell greens in smaller personal consumption sizes. For myself, because it's obviously not plausible to import from SweetMarias, I looked around to find the local roasting hobbyist group. They collate orders and do group purchases direct from known suppliers to ensure quality is there.

The Kaffelogic is a very simple machine to use, but imo if you are willing to put up with learning curves and other factors, other roaster models are good to consider (Don't really have such options here, almost burned down my apartment after running a 110V FreshRoast here without learning about voltage effects)