While our stay was overall fine, we were told on arrival that to use all 3 bedrooms of the 3-bedroom apartment we'd rented, we'd have to pay an additional 200 euros for our 5-night stay. This was a significant unexpected additional expense that was really unclear from the listing description, so I wanted to make it clear for other English speakers who might be unaware you'll be financially penalized for having fewer than 5 in your party!
A couple other things I wish I'd known before I booked this Airbnb: The third room is in the attic with a low, sloped ceiling; unless you're very short, you won't be able to stand up straight. To reach the apartment, you need to walk up two flights of narrow stairs with your luggage -- there's no elevator. But the apartment is overall in a convenient location near the train station and gets a lot of light. The kitchen is well-equipped for cooking.