Location is amazing - 2 minutes from San Marco or Rialto, and easy walking distance to just about everything else.
Communication - fantastic. I requested a taxi and private boat very late - two hours before we were supposed to land in Venice, and they hooked it up no problem. Response times were almost instant. The staff also helped us out a lot with advising about travel times, procedures for using the boats, and other helpful tips.
The space - small, but very cute, with decent views out of the windows. It is not ultra luxurious but it is a great value. Be aware - the stairs are quite steep and narrow, so if you have any mobility issues or will be traveling heavy then this might not be the best place.
Overall a wonderful experience.