We were very comfortable at Chiara's place, and we loved Valletta and the rest of Malta! The apartment is 100% like in the pictures, and it is perfectly clean. It is very spacious and incredibly well equipped (e.g. kitchen utensils etc.). The bed is very comfortable and the shower is great. The location is good, in a nice little street (mostly quiet, sometimes you can hear some neighbours in the street in the morning). It is about 15 minutes walk to the main bus station with buses for all the island, there is also a bus stop for Valletta buses nearby but we never used it. It is also close to some landmarks and easy to get around town from this base.
Communication with Chiara was easy and she was nice and helpful at check-in. We can definitely recommend!