Karl's place was in an excellent location - literally just 100m from the Balluta Bay, very close to restaurants, transport, etc. It's in a quiet street though, so no noise issues, especially in the bedroom.
There were some cleanliness issues, e.g coffee mug stain on the sofa, though nothing too bad. Apartment had washer but no washing powder.
The living room doesn't have much natural light. The transparent chairs were a lot more comfortable that they seemed on photos.
The listing is managed by a company, communication was fine, through WhatsApp group, and self-checkin/out were convenient.
In summary, I loved the location but the apartment felt a bit overpriced.