Let me say first that our tour guide was great. Very informative, pointed out some very interesting items including the flamingos nesting. We were looking for a last minute 1/2 day tour while finishing up our vacation and thought this would be different. Well, we gave this only 3 stars because the area we went to, even though beautiful, for the hour or so it took to get there, didn't have a whole lot to offer. We did go on the canal ride but essentially it went down one way, turned around, went down the other way and came back. All in about 30 minutes. If you've never been to Venice, maybe you would enjoy it more. But besides the excavation of sea salt, there wasn't much to see along the route. Essentially the Town of Averio has a lot of new buildings that recently sprout up due to the football championship that was held near by at their new stadium.
So if you are looking for old, historic, quaint town, I wouldn't have stuck to Oporto, which we loved.

It was ok, but the driver was tired and we almost got into an accident. I was very happy to just get back to my hotel. Don't reserve these on the morning after New Years Eve.