we couldn't stay at Sonia's because the cleaner didn't come between the last guest and us so we found the place quite dirty, which is not Sonia's fault but still put us in a difficult situation of having to find another place to stay on last minute.
The check-in instructions were very clear and easy though!
From what I could see of Sonia's flat, the price could be a bit lower to reach a fair value for money (you basically only have access to 1 bed with 1 pillow for 2 people, 1 bathroom, 1 kettle - no cutlery, no cooking allowed, no washing machine etc.)
Despite the bad experience I still left 3 stars because being a "superhost" myself, I think Sonia's place has a good potential and wish she's encouraged to do better for the next guests :-)