Claudia is very smart and ready to help the guests. Furthermore her house was situated in a super good location that we could easily go to most destinations.
To the Korean or Asian guests, it is necessary to check the check-in time. She wants to check-in before 20 O'Clock, but Korean-air lands at Rome around 20 O'Clock. Probably she can arrange that, if you ask about late check-in beforehand.
Her place is on the 5th floor. Of course, it was very inconvenient, but that's why this place is relatively cheap despite the super good location.