Very nice interface and well thought out for most booking cases. Not for events though. What I miss here for example is an option to disable booking for certain events.

Also, what I don't like is not being able to edit the HTML (for example to link employees to buddypress profiles etc) and that data is stored in separate tables in the database and not the wordpress way. Which might be beneficial for performance is setback when using the data otherwise – having to code custom SQL queries and not being compatible with builders etc, and most importantly not being able to connect the data to other custom taxonomies, compability to other plugins etc. If you are looking for an easy, ready made solution and you don't need flexibility in customisation, then go for it. Otherwise don't.