Beautiful renovated apartment with exposed wooden beams, comfortable bed, amazing location literally 5 minutes walk from the Biennale. Very clean. Buying food at local Coop/market then being able to cook them with gas was great. Peaceful apartment and neighborhood. Check-in was fine (requires WhatsApp). Key system a little complicated (3 different keys, various timed outside and staircase lights to navigate) - but probably common for Venice.
Note: After booking we were requested to give passport info (standard) and pay tourist tax (standard) via Lionhost (company managing the apartment) - however, I recommend you pay the tourist tax in person since Lionhost website had a technical problem that meant they denied that we had paid tax online (even though our card was charged) - after a couple of days they apologized. Plus the Lionhost site asks you to sign a contract (different from the airbnb one) which asks for cash deposit; we did not sign that contract. Other than that, everything was great.