Does the job if you’re looking for a cheap, basic room in a good location.
Location is great - less than 5 mins walk to main parts of Sliema (promenade with cafes, ferry stop to Valletta etc). Room itself is decent enough, bathroom and shower are good.
However, the walls/doors are incredibly thin. None of the guests were particularly loud, but it meant that you can hear conversations, and toilets and bathrooms flushing (even from guests on different floors), which made it difficult to sleep well. Was fine for me personally but the A/C stopped working for some of the other guests too.
If your main criteria are price and location, then by all means not a bad place to stay. Personally, I would pay more to stay elsewhere next time. I can imagine the problems I listed could be much worse had I visited in peak summer (I visited end of December, so was relatively quiet).