I spent 1 week exploring this fabulous island in February 2014.
A great place for solo traveling, quite safe, good public transport and plenty of interesting sights to see to keep busy.
As I like to explore by foot, I found walking a delight through the different areas, full of interesting architecture, little bars/eateries and fascinating history of the Knights Templar.
The hotel I stayed at was very reasonably priced (although it was ‘off season’) had a big beautiful room with a huge bed, couch, coffee table on the 2nd level opening out to a large balcony with views across the bay overlooking the capital Valletta. Spectacular!

 My advice:

The local X2 bus goes directly to/from the airport, takes about an hour and goes along the waterfront at Sliema

I stayed 1 week: Sliema Marina Hotel, Sliema


Note: All opinions are my own.