I came to Germany on a two week business trip. Rather than renting a hotel and eating out, I opted for this 1br apartment.
The apartment was perfectly clean inside and radiant heated tile floor throughout. The bedroom had a queen size bed (two double mattresses) and a pull out couch in the living, plus a full wardrobe. It had a full kitchen fully stocked. Bathroom had a good sized shower, no tub.
I was not real fond of the foam mattresses on the bed or couch, but I think that's a european norm. However, I've been on much worse spring mattresses at hotels, so it's not a complaint.
The only downside was that the kitchen didn't have a full knife set. It was a little hard to chop vegetables to cook with a steak knife.
All said and done, I give it a 5/5 and would gladly stay there again and will be my go-to if I return to Jena later.