Diana has a nice apartment in a great location. I could walk almost everywhere, and if you don’t want to walk the metro is only 2 minutes away. It’s a bit on the small side but for a solo traveller like me that was fine. It’s on the first floor and there is an elevator.
My only real problem was noise. Not from the street as it is a very quiet street, but from the adjoining apartments on both sides. I don’t know why but you can hear everything through the walls which made sleeping a bit difficult on a couple of nights.