Staying in Betty's AirBnb was very good! Her communication is quick, adequate and very friendly. Issues are fixed within the hour. Cooking supplies are of good quality and the airconditioning works very well.
The location of the apartment is close to either boat station Giardini (less than 5 minute walk) or Arsenale (a bit more than 5 minute walk), both with direct connections to the city centre, bus station (Pl. Roma) and train station. It is a very safe environment where a lot of Venice locals are drinking and eating (but not causing any noise issues). We have felt safe every moment we spent in the area, even late at night.
We have had a very good stay in this AirBnb!