Please make sure your train arrives at Venice Santa Lucia train station and not Venice train station – Mestre otherwise you will need to take an additional train to Venice.
If you then arrive at the Venice Santa Lucia train station, you go down the steps of the station, on your left you can take a public service water taxi (yellow band) which in about 15/20 minutes will take you directly to the Suites or with the public vaporetto line 2 (summer season only) or line 1 (all year round) towards Rialto – San Marco which will take you in about 35 minutes to the Stop of San Marco Vallaresso and from where you will continue for 10 minutes on foot.