Murano is a good place to stay when you want to visit Venice - and also Burano and Torcello and the Lido.
Carlos apartment is a 2 minutes walk from vaporetto station where you can travel nearly every 15 minutes in each direction. A nice bakery is about 5 minutes away (Marcato) and a Coop is not far if you want to cook sometimes for yourselves as we did. Carlos apartment is in the more quiet part of Murano. But the distances on Murano are not far.
This apartment looks bigger on the photos than it is. We liked it but our fifth person - sleeping on the sofa - didn´t really have a sleeping comfort. Sixth person would sleep on an even more horrible sleeping possibility. Being only four would also need less space for the sofa during the day as it is a difference between sofa at day and at night.
You should speak and understand some Italian to organize check-in, check-out and messages during your stay. We didn´t have Internet for some time, informed Donatella about the fact and were told that she maybe will send someone. We arranged us ourselves. Same situatiion we had three times with our electricity. It went off. We called downstairs to the people living there. They organized the electricity running again.
It is really important to know that one sleeping room is on the other side of the balcony. We had the doors closed every night. So it was not really funny if one of my sons needed a visit in the bath during night and nobody heard.
I would recommend taking photos on the check-in together with the people showing you the room. So you can avoid things to recognize when they are gone and you are on safe side when you are told that you did damage.
As we found opened Muesli packages in the kitchen, we left some things in the fridge like closed milk bottles or closed yoghurt. They didn´t like that. Maybe you should take everything with you when you are leaving the destination and take it with you if you go to railway station. there you find some people without home very thankful for newly buyed apples and even began packages....