We spent two nights at Marco's and had a wonderful time partly because Marco and his wife did everything to make our stay comfortable and nice. They offer a great breakfast - small and with everything you wish for to get you ready for a day in that gorgeous city. The flat is well located and you can reach every tourist attraction within 30-ish minutes.
The rooms are tidy and clean, with air condition and a very nice old venecian style.
We travelled with our 2 y/o daughter and it was no problem - there was a cosy bed for her and she got on very well with the cute dog og Marco's :)