we had a great time in Valentina's wonderful apartment.it is on the first floor in an old venetian house, very roomy with nice atmosphere and tasteful furnished in a mixture of antique and 50ies style. the castello district is not that touristic but only about 15min from the main touristic sights, perfect to get a glimpse of italian lifestyle or to visit the near biennale (exatly on halfway between arsenale and giardini).