Very clean and nice apartments close to Valletta, there are maximum 6 people staying in 1 apartment. There is 1 bathroom for 4 people in 2 rooms (one room has an own bathroom), but that was totally enough.
You have to insert coins to operate the air conditioning, but it's really cheap, around 1,5 EUR / 4 days (if you travel in Malta during the day and don't stay in the rooms like most of the guests).