It's a very comfortable room (the mattress is good!), clean and very well placed. It's near the rialto bridge, that helps the transportation! It's not easy to find it alone, because Venice have all this little corners that are not totally covered by google maps, you need to call Antonio when you get there. Its is not hard, for it's very central, but the exact location needs communication (I point that because I lost time trying to find it by myself and then I felt stupid because in a quick call Antonio got it all clear!). Also you should know that it is a two floors stairway up, so be sure you can carry your luggage (tip: don't bring too much luggage to Venice, it's a major walking/stairclimbing city, you will regret the extra weight).
Antonio is a very nice host, very accessible and helpful.