My husband and I just spent four nights in Krakow and were very impressed with this place. Our apartment was simple, but incredibly clean and well-equipped. The bathroom and kitchen were really nicely done and appeared to have been very recently refurbished with lovely white kit. Even the towels smelled amazing, and the kitchen had a hob, microwave, kettle, fridge freezer, toaster and plenty of utensils and crockery (even shot glasses to test out the local vodka!).
Thoughtful touches like washing up liquid (boring but essential!) and hand wash were also provided, and there was a flat screen TV and lots of info/maps available.
The location is on one of the main streets in the Old Town about three/four mins walk from the main square, but because it is in a courtyard it is very quiet. Also about a five min walk to the main train station where you come in from the airport.
Everything is in walking distance and the owner welcomed us himself and was very helpful. Excellent value and would definitely recommend to other Krakow visitors.