Please keep in mind while reading this that many of the 4 and 5 star reviews on Yelp are by people who were provided a free meal and gift card for the opening of this restaurant (marked Elite'15)...
Perhaps this restaurant isn't meant to be geared towards a medium sized group in their 30's. The room we wound up in was an odd L shape with our table wedged in the corner like a bad afterthought. In order for one person to get out the entire side of the table had to get up. Our server kept insisting the best idea was to order a bunch of items and that the table share them to get to try everything. That concept doesn't really work here since some items are just 1-2 pieces of food. How do you share one scallop with the table? The better idea is to stick with getting 2-3 plates per person. I like the small plates concept and chose several other restaurants during my visit to Vegas that used it and seemed to execute it better.
The food was prepared well and the flavors were good - but that's just it - it was only "good". Not great, not amazing... just good. With the total bill the size it was, I expect more than "good". It certainly wasn't innovative with the flavors and menu items. There are certainly better options on the strip for the same prices with better menus, experience, and flavor. You probably have a local place serving modern Italian and doing it better than Lago is, so skip this while in Vegas.
The bar/lounge area was the nicest part of the restaurant, but with a large group, their iPad menu made drink ordering extremely slow since they only had one to give us for 6 people. Staff was friendly and attentive and worked so well together it was hard to believe this place opened only a few weeks ago!