What a wonderful experience !
As the previous comments said it, if you're sensitive about the noise, you might need some earplugs in order to enjoy your sleep as much as possible. But the sound is also due to the great location, in one of the mainstreet of Birgu, which means that you can enjoy the wonderful maltese architecture, and the sublime view on the Karkala port, while you're on the rooftop/jacuzzi. Besides, we were 2 minutes away from the bus stop, supermarket, and a really nice restaurant, and the bakery bus was stopping right in front of our door everymorning, which gave us the opportunity to buy frech bread really easily. To conclude, Ed is a great host, available to answer any question and find solutions when you need it. Bonus : he knows a few words in french ! :)