Property is very spacious and clean. The coffee machine was a great bonus.
The weather was very warm when we stayed so the air-con was very welcome, especially if you're sleeping in the front room as you cant have the windows open due to traffic noise. The mezzanine floor beds are okay. They are comfortable enough to sleep on when you're worn out from sight seeing, but the mattresses are thin if you're on the larger side (I'm 15st and could feel the bed base through the mattress). The sofa beds are also good for sleeping.
The apartment is located on the edge of Kazimierz and within a 10 minute walk of the main Rynek. There are lots of small supermarkets, excellent restaurants, and bars on the doorstep.
Be aware, if you are someone who, like me, needs to have all your plans finalised well in advance, the Host will not send the check in details to you until the morning of your check in day. This is for security reasons. Just make sure to have mobile data enabled or find a bar/cafe that offers wifi if you are leaving your home country early in the morning or you'll have trouble receiving this information.