What it needs from you

A map block takes four fields, and only the first is required:

Google Maps embed link: required. In Google Maps, find your place, tap Share → Embed a map → Copy HTML, then paste it here. Pasting the whole <iframe> is fine; the field pulls the link out of it. This is the exact pin you picked, which is why the map shows your actual doorway rather than an approximation of your street.
Place name: optional, shown as a title
Address: optional free text like Shop 4, 12 High Street, London. Shown under the map so visitors can read it without opening anything.
Open hours: optional free text, one line per day works well

What visitors see

On your live page the card shows your map, but it does not pan, the whole card is a button. Tapping it opens a dialog where the same map becomes draggable and zoomable, alongside your place name, address and hours.

The dialog also carries an Open in Google Maps button, which opens the exact pin you picked: the same place the map is showing, not a fresh search for your address. Your embed link is all it needs, so it works whether or not you filled anything else in.

Why it’s a Google Embed

The map is rendered through Google’s Maps Embed API, which is free and keyless. There is no API key to obtain and nothing to bill. The trade is that you pick the pin yourself in Google Maps and paste the link, rather than typing an address and hoping a lookup lands on the right building.

That pin is then used for everything the block does, including the directions button, so what a visitor gets sent to is the place you chose, not a guess at it.

It also means there is nothing to configure beyond those four fields: no map style, no zoom level, no pin customization. Whatever the map looked like when you copied the embed link is what visitors see.