Hi

The pin is not correct and is not showing the right position on Google Maps which is used like API on web site. 
This is the location on Google Maps 

google.com/maps/place/Dnevni+dečiji+boravak+Moj+Svet+NS+-+Centar+za+edukaciju+i+unapređenje+učenja+-+Novi+Sad+-+produzeni+boravak+za+decu/@45.2552057,19.8036982,20.63z/data=!4m14!1m7!3m6!1s0x475b11c9ea7420b1:0x69a6b494d97b0f89!2s28,+Bulevar+Slobodana+Jovanovića+18+,+21000,+Novi+Sad+21000,+Serbia!3b1!8m2!3d45.2540748!4d19.8039849!3m5!

The same location is on the website, please clear a cash of your browser or open it in incognito mode and open link again 

https://www.mojsvetns.com/location/