LordCros provides some useful widgets. You can add that widgets in Appearance -> Widgets. With these widgets, you can build your sidebar easily.
Current widgets are:

  1. LordCros Room Search Form
  2. LordCros Rooms
  3. LordCros Recent Posts
  4. LordCros HTML Block

Also you can use default WordPress widgets as your need. LordCros provides all default WordPress widgets, so you can use these any sidebar.