I love that it integrates into slack so easily - It's very easy to use once you've got everything setup correctly (and there are some great guides out their for this). The customer support is also really good at helping me through any issues i have when using leevebot. There isn't much about Leavel Bot itself which could be improved upon but as long as they continue adding features like integrations etc then its all fine by us :) We can now manage our employee leaves without having an excel spreadsheet of who has what days off left each week/month and how many we need them back next month / year!!