I wouldn't imagine better place for stay, especially in group of 6-9 persons! We were 8 persons and were feeling extremely comfortable. Sometimes we were even joking, that you can be lost from you friends even being all together in the same house.
Apartment has 2 wonderful terraces: on the ground floor - for the morning coffee and if it is a windy and chill time; the rooftop terrace is great for the sunrises and sunsets with a wonderful view to Valetta.
Apartment is well equiped with everything you could need for a stay. And the location is great as well - close to the police station, so in case you are lost or don't know how to explain your address to the taxi driver - you need just to mark police ;) Besides, to the ferry boat, which takes you to Valetta just 5-10 minutes, so you can reach the capital in 20 minutes :)
And finally - the most important - the owners and administrator are great persons! Quick answers, nice recommendations and ready to help you with any question (even with the candle from mosquitos!).
With no doubts I would recommend this place and if I come back, I would try to live there again.