Two people, one link
Meet me in Belval
Pick a place and an hour. You get one link to send on WhatsApp. It opens as a card with the map, the walk from the station, whether the place will be open at that hour, the address, and a button for the calendar. No account, nothing stored.
How it works
The link carries the place and the hour, nothing else. Whoever opens it sees the card built at that moment from the place's own page: the map, the minutes from the station, and whether the door will be open at the hour you named. If the place changes its hours, the card changes with it.
A link looks like this: ilovebelval.com/meet/?place=golden-bean&at=19:00
Only places with a pin on the map are in the list. The walk is measured from the nearest station as the crow flies, plus a little for corners, so it is a fair guess rather than a promise.