The appartment is ideally located in the center of Valetta, next to the ferry that drives to Sliema and close to restaurants and pubs. It's nice and clean (bed could be more comfortable :) ). Jelena arranged a taxi for us because we arrived during the night but buses go from the airport to Valetta in 20min. We had a very pleasant stay and would recommend this place.
Small tip: take some hear plugs because the street is quite noisy in the morning.