Sonia apartment is in a great location, right near my fave grocery store , loreto metro station (about 4 short stops to duomo), corso Buonas Aires and all its shops and central station. Best is super comfy and although dusty the apartment is clean and organised. We couldn't find the remote for the air conditioner but keeping the apartment dark during the day kept it cool enough at night. We didn't actually meet Sonia but her mum was nxt door and very sweet and helpful. Water pressure on shower is not the best but the heat is consistent. There's a huge balcony with table setting to eat breakfast on too.