In use, people claim it is the best Android Phone ever.
Based on it looks and my subjective opinion on that point, it is a good phone.
That is really all the info someone can give you regarding how good the phone is in general. Though it has it's flaws as well. For example, it isn't water resistant, but durable because of the metal body. The camera has the highest rating of any mobile camera to date, and Google claims it is the best mobile camera ever made by man. (A claim most reviewers support.)
Well if their cameras beat samsung, then google's new phone should be worth it, I haven't tested it out but I also think it looks quite okay, more or less an iphone 6...