I stayed with my family (5 persons) for 4 nights in Mirko's apartment. Everything was as advertised- spacious apartment, great location, 10-15 minutes walking distance from San Marco Square. You could find in the apartment all that is needed for a comfortable stay. Having to climb 5 stories was not an issue for us-we have had fair warning. Overall we got our money's worth.
Mirko was helpful and quick to respond to our inquiries.
All in all, it was a very good choice that fitted our needs.