My friend and I stayed with Ninna for 2 nights. The flat is very conveniently located, right next to a metro station. If you fancy a walk to the city center which we did, it will take you only about 30 mins. The room is clean and has everything you need. It is a little bit problematic at first though if you have lots of luggage because the place is on the 5th floor with no lift. Other than that we have a very lovely stay with Ninna, she answered to all our inquiries and was very friendly. Thanks very much Ninna!