We very much enjoyed our stay in Venice in general and at Irene's place in particular.
Good location especially if you are visiting the biennale as both Arsenale and Giardini are in walking distance. Could be considered a bit far from hot-going-out areas(like S. margherita)but nothing one cannot walk. Also very close to the vaporeto stop.
The place itself is clean, pleasant and very spacious. Irene and her friend who showed us to the place were both very helpful, easy to communicate and keen to make our stay as comfortable as they could.
Definitely recommending it!