Street names do not appear on your booking engine map, no matter how far you zoom in.
Why this happens. Your site’s saved custom map style is hiding them. HomeRunner map styling can include a rule that turns off local road labels at every zoom level. While that rule is active, zooming in never brings the labels back. This is a settings issue, not a Google Maps limitation.
What you can do. The local-road label visibility in your map style needs to be switched on. Contact support to have street name labels enabled on your map style. Once they are enabled, street names render normally as you zoom in.