Visual hierarchy is important in design because it boosts the user experience and leads the user attention
Your No.1 priority is to make your primary action (aka CTA) prominent.
In this case, the button that initiates the booking process is the main CTA.
Then you need to make text readable & distinguish element types. eg. Tags must not look like the primary button.
Play with text attributes (weight, size, line height) to hack visual attention & hierarchy.
Make Tooltips Responsive
The classic tooltip is activated once the user hovers over the element... On desktop, this works perfectly!
Choose Chart Types Carefully
Line charts might look trendier but they don't apply to every case. When the x-axis has limited options, a bar chart is the most appropriate graph type.
Padding On Rounded Cards
The left cards use the same padding around the card. Yet the visual result seems off.