Had an excellent stay at Rosa's guesthouse in Valletta. Rosa was there each morning to greet guests in multiple languages and give them tips on what to do.
The guesthouse has belonged to her family for many years and she obviously takes great pride in it. Space was very large and well appointed, it felt very historical and lived in. Only a few mins to all of Valletta and the main bus depot which will take you anywhere you want to go on the island.
Would definitely stay again and recommend it to friends visiting Malta.