We stayed at this house for 6 nights in July 2018, for our honeymoon.
If you want to stay in a classic Valletta property, but with some added style and luxury, this is a good choice. As it is a period property, Mark and Christine have restored it faithfully - keeping the high ceilings, stone stairways and iconic Maltese balcony - while adding their own touches. There are cool unique decorations (like a spotlight lamp, and some great artworks), and a modern kitchen with electric oven and little espresso machine. The bathroom is between the ground and first floors, halfway up a staircase, so you do need to listen to the description where it says that you need to be OK with stairs! The bed is comfortable and the aircon unit cools the room nicely in the time it takes to pop out for dinner.
The house itself is right in the old grid of Valletta, a few minutes' walk from the shopping and restaurant districts and right near some gorgeous harbour views. You can also get to some shady gardens quite quickly, or walk to the main bus station (to go to Mdina, for instance) in about 15 minutes.
Mark and Christine themselves were excellent hosts. Mark arranged to drive us to and from the airport at cheaper-than-taxi rates, and gave a running commentary on all the cool things about Valletta during the 15-minute drive. When he showed us around the house, he also pointed out the lists of recommendations and suggested schedules that he and Christine had put together. We followed several restaurant recommendations and took his advice to see many of the beauty spots and cultural hubs of Malta. The house was utterly spotless and supplied with lots of clean towels, a freshly made bed, and (importantly for me!) tea and coffee.