L’Année Dernière à Marienbad (Last Year in Marienbad) filmed at Schloss Schleissheim, Oberschleissheim. The plainer exterior of the Neues Schloss appears in the flashbacks as a different spa hotel. On screen it's Frederiksbad.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? everything filmed in Oberschleissheim is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Oberschleissheim and it tells you what was shot around you, how to get there, and whether you can actually go in.
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