We had a great stay for 3 nights at Vincent's place. The best thing about our stay was that Vincent made everything very easy for us. He was flexible on check in and check out, communicated clearly throughout, sent us advice on how to get there from the airport (complete with photos!) and gave us lots of tips about what to do on the island.
The apartment itself is exactly as shown in the pictures. For us the best thing about it was the kitchen which had all the cooking equipment you could need and meant we didn't have to pay for restaurants every day. Everything in the bathroom worked well (powerful, hot shower), the bed was comfortable and there is good storage space to unpack your suitcase. The street was quiet and very convenient to the supermarket, bus stop, restaurants and sea front.
We would recommend getting a bus pass (€21 for 7 days). We saw everything we wanted to on the island by walking and using the reliable bus service from the bus stop just outside the apartment. The roads in Gozo aren't easy to drive (narrow, with sharp corners and some pot holes).
We really enjoyed visiting the citadel and the azure window on our first day and on our second day we did a lovely (long) walk along the coast, past the salt pans and then cutting in to walk along country paths and roads to the beautiful ta pinu church.