Emmas Apartment is great. You will be able to walk every distance within Venice, even without Vaporettos, but only if you are good on your feet. That can be a huge relief for expenses within your planned vacation.
You have a tobacco shop right at campo san polo, where you can buy Vaporetto-tickets for whatever destination your heart desires.
"Onboarding" is really organized and Alexander welcomed me and explained everything. You need to listen carefully when he talks about trash disposal, thats way different than in Germany.
The apartment has everything one needs to feel at home, the kitchen is equipped good enough for a short stay, I would miss some stuff for a longer stay, but thats the cook in me talking ;)
Supermarkets are only short walks away, for water you could buy a reusable bottle and collect drinking water at the little "fountain" at campo san polo.
The bed is quite big, but I didnt like the pillows, because my preferences are more on the softer side, but all in all, you can grab a good nights sleep there. They even offer some electrical stuff against mosquitos.
This was a vacation I will keep close to my heart, because it was the first time ever that I vacationed on my own and this apartment will always be a part of it.
I really recommend it, the location is just gold, if you visit as friends, ask for two blankets ;)