We had a great time and enjoyed staying in Karl's place. I can only confirm the previous comments from previous guests. Karl is very communicative, making sure that everything ok with the stay.
The view is as on the pictures, superb!
We had some trouble to get to the place, due to a road work ongoing nearby, and I followed the signs left by workers to strictly, but after checking with Karl, that was sorted out quickly as well. If you going in beginning of April, ignore the do not enter sign at the roundabout. :)
This is nothing to do with Karl or the accommodation, there are some construction work was ongoing on the neighboring houses, but they only work weekdays and we were with small kids, we beat easily their starting hour. Note, as I see if you go everywhere in Malta construction is on the way on houses, roads, etc.
If you travel with small kids, there is restaurant nearby, Westreme which has a small playing area, enough to entertain them for an hour. 2 mins walk from the place, shop also 2 minutes walk and open from 8am till 10pm.
Highly recommend Karl's place.