In one word: amazing.
We stayed at Tania's for 4 nights with our one and a half year old twins. The place itself is beautiful (the photos don't do justice to the apartment) and was sparkling clean. The location is amazing- right in the historic center (we walked to all of the major sights), but on a beautiful and quiet street, so that it really felt like an oasis of peace during the day.
But the best part of our stay was definintely Tania herself. Check in and checkout were a breeze. She organised 2 baby cribs free of charge, left lots of children games and children's cutlery in the apartment and even bought the boys biscuits and juice. Tania was avaliable throught our stay and reaponded quickly to any inquiry we had. She also gave us really great restaurant and site-seeing recommendations and organised a 10% discount in the wonderfull restaurants around the apartment.
We really could not recommended this airbnb more!