There is nothing negative, just note that supermarket is closed on Wednesday afternoon.
Why would you not stay here when coming toVenice?! A pretty island, away from the heat and bustle of Venezia, Sant Erasmo is just a lovely vaparetto ride across the lagoon from the Fondamente Nuove stop. Once on the island, you are made to feel very welcome at Il Lato Azzurro. We were picked up from the Cappanonne vaparetto stop, given a room with access to garden, and the bar serves ice cold beers! The room was large, clean and with good bathroom. The breakfast was plentiful. Special mention has to be for evening meals: pasta, fish, the island's vegetables. We didn't want to leave. We got a 24 hour vaparetto ticket when we first arrived which allowed us to get to sant erasmo on first day and then explore Venezia the next, then we had a day exploring sant erasmo by bike (well, and just sat in the garden). Island has supermarket, Orto vineyard for wine tasting, beach, beach bar, and three restaurants.