1. Pathfinding is broken here - Needs to be connected to road, but not sure what points are entrances and which ones simply end but lack noexit=yes tag. 
2. Needs to be changed to highway=footway cuz of https://community.openstreetmap.org/t/incomplete-bicycle-tags-on-paths-in-belgium/104099/3, i don't think bikes are welcome in such gardens?

I'd fix this myself but no street view images are available