Considering the Prime Hotels Roma Cassia in Rome?
A VT member wrote the following comment about visiting Rome:
Train Rome to Venice by scanos
I would not recommend the Overnight train between Rome to Venice. It is a long journey of up to 9 hours and you don't always get a good sleep. Recently my brother and I took the eurostar service from Rome to Venice during the day and it was relaxing and quick. With this service you must reserve a seat and the time goes very quickly. For example, the 06:50 train from Rome Termini to Stazione Santa Lucia in Venezia (Venice) takes 4 hours 27 minutes. See trenitalia.it for more details.