Apartment is overall nice, well equipped and in a great location in the city centre. Really nice host - you need to pick up keys in their office which is not that close to apartments but i asked for other solution and they sent it to me by taxi :) Really nice :)
Drawbacks: Unfortunately, the smell from the bathroom pipes was unbearable. I know apartments in older buildings in Warsaw have this issue, but here it was the next level of the smell... really bad. Moreover, toilet was a bit dirty as well as toilet brush and mirror. Mop also smelled (was wet) and was left in the bathroom.
Other small things to improve: night stand / table next to bed would be nice. More and cleaner / less worn towels, coffee and tea would be great too.
I stayed in this apartments for the 1st and last time if they dont do anything about this smell... For this price you can find something more pleasant (less smelly) in Warsaw.