We stayed in Walter's apartment during a 10-day holiday in Malta. Walter was a fantastic host and provided us with some necessities (bread, milk, wine) to start our stay. Furthermore, he was very helpful with all the questions we had and checked in on us to see if everything was okay. The apartment itself is as described in the ad with a small kitchen with dining table in the downstairs room and a bedroom / living room upstairs. The bathroom is also upstairs, but connects to the bedroom with a folding sliding door. Even when closed, the bathroom and bedroom are not fully separated.
Since Malta gets quite hot in the summer, the fans in both the bedroom and the kitchen were a very welcome addition. We also considered the washing machine downstairs helpful, since we needed to pack way less clothing this way.
The apartment is located in Cospicua, which does have a very nice waterfront that can be reached in a few minutes by foot. There a several restaurants and some nice sceneries into the harbor. Other than that, there is not much touristic activity nearby, but Valletta (~30 min by bus) and Marsaskala (~20 min by bus) can quickly be reached for sightseeing and swimming. The west of the island is less well connected and requires longer transits and more changes. What should be noted is that the apartment is located quite a bit uphill, which might be an inconvenience if you cannot walk steep streets.
Other than that, the environment is quite typically Maltese. For us, the best shopping opportunity for daily needs seemed to be the weekly street market in Birgu, since the nearby convenience stores have limited stock.