My friend and I stayed for four nights at Nemy's place and we really enjoyed it.
The room is a bit small so if you arrive with big suitcases it could be a little crowed. However, it was a really quiet neighborhood but still it was really in the heart of Sliema, which made it really easy to discover Malta! Its really close to the Busstop (3min walk) and to the ferry, that brings you to Valetta (5min walk). Also there are a some really nice restaurants just around the corner and a really good breakfast-place.
Overall we really enjoyed our stay and Nemy was really a great host with really fast and good communication before and during our stay.