I like that it allows me to assign open times, which helps in my budgeting process as well! It's user friendly since its web-based but also has features such high availability of modules with more advanced options available within each module itself (such as choosing between different types or sizes).
Sometimes we have issues when there are too many users online at once due do our office being located near public transit stations - so if you want your OSSSim site running smoothly during peak hours then be sure not all offices/people will use this program simultaneously!! Also some people may find using multiple computers difficult because they can't customize their computer experience accordingly; however these problems aren’t much harder than those who donno how websites work haha :) We're able make changes quickly by simply clicking around rather easily compared others out here now days where everything requires lotsa code etc..