Custom Post Type with Custom Field (a blueprint map)

Hi, everyone! I have a big question: I’m working on a project in which I built a custom post type named “Stores”. It’s a Shopping Mall Website and it’s a building with 4 floors. When a post a store (a single post inside this custom post type) I’d like to insert some other fields, like number, telephone, social links, etc. Until here everything is ok. But now my client wants us to build a kind a Google Maps so that he could pin in the map tha exact location of each store, according to the floor it’s based. For exemple: I would have a select field, choose the “first floor”, so it would load a field under with the map of the blueprint of the floor. After that, just pin in the map and save the post with the coordenates (in order to display the same map later in the front-end). Is it possible? How would I do it? I have no idea. If you guys could help me, I would really appreciate. Thanks a lot!