It's easy to use, it has great tools for customizing reports, it allows you to easily upload your own data from Excel or CSV files, and best of all is that there are no monthly fees! I wish we could export our dashboards as static images (like with Google Analytics).
There isn't anything I dislike about this software; however, if you're looking for one simple tool to help manage your analytics then look into Greymetrics. We've been able to see trends in our website traffic over different seasons and months and have used these insights to make changes to improve user experience.