Treviso to Venice?
 

I am thinking about staying in Treviso, outside of Venice.

How far is Treviso from Venice? Is it worth staying there to save some money on the hotel?

Prob. not.

the airport is 19 miles from Venice
while Marco Polo airport is 5 & you
can either take the bus into Piazzale
Roma or the airport caporetto which
takes 50 minutes.

oops typo: should be vaporetto

How long are you staying for?

I would say it's not worth staying that far away. If I was trying to keep accommodation costs low I would settle for somewhere cheaper in Venice than stay further out.

If you think the main part of Venice is too expensive, are there any cheaper options on Lido or in Mestre for you which are a lot nearer than Treviso?

To me, one of the charms of Venice was wandering the streets in the evening, after the crowds had died down. If you stay elsewhere, even Lido or Mestre, you will miss that opportunity.

I would look long and hard for less expensive lodgings in Venice (perhaps a convent or hostel) so I could spend more of each day there.