My stay at Daniel's place was really nice and completely in line with what other guests have written. Check-in went really smooth, the apartment has its own entrance and is cleverly laid out with all the basics in place. Perfect for a single traveler. As it is located right above one of the main (charming) restaurant streets, you will get to hear the hustle and bustle as well of music and chatter from below until quite late. However, it didn't really bother me as i had taken it into account - and comes with the package of being located right in the middle of the city within walking distance to practically everything. The main bus station is a 7-9 min walk and easy to find. From the main bus station you can basically cover the whole island.
It is clean, the bed is comfortable and the internet connection is good. I would definitely recommend taking the stairs to the rooftop where there are some chairs and tables to enjoy the wonderful (night) view of La Valetta. And if you are in luck, enjoy some of the fireworks. In short, I would definitely recommend Daniel's place.