Karl is a great host, always available to help if you encounter any issues. The apartment is very clean and modern looking, the beds are comfortable and the kitchen has everything you could need. The only downside is that there are no power plug adapters but you can get one at almost every store here for as low as 1-2 euro.
The surroundings are quiet and there is almost no traffic so if you need a good night sleep this is the place to be.
St Julian's Bay is a 10 minute drive from here, same for Valleta.