Me and my girlfriend stayed for 4 days in Ann's Appartement. Regardless we couldnt meet her, she was very communicative and tried to make everything comfortable for us. The check-in in the appartement is no problem at all. The appartement is in the heart of Valletta, so its perferct for you, if you wanna visit the city.
Also the appartement was very clean, the shower is beautiful and the kitchen has everything you need for a little breakfast and cooking there.
I can recommend the appartement to everyone who wanna see Valletta and Malta in general.