Sandra's apartment was awesome, and so was Sandra herself.
Sandra met us at the water bus stop near the Realto Bridge and walked us to her apartment, which was great because it's easy to get lost in the Venice alleys. The apartment was as pictured and described. Sandra sat down with us for 30 minutes, gave us a map, and recommended a bunch of attractions and restaurants - all her recommendations were great. She even went to the market to get us food and drinks for breakfast!
The apartment was spacious, bigger than I expected. The air conditioning worked great. No noise from the alleys below. Bathroom was good.
The location was perfect! We walked everywhere we wanted to go and never felt too far from anything.
If I go back to Venice I would definitely stay at Sandra's apartment again.