I can search for streetname + house number but the return value of GeocoderNominatim.getFromLocationName does not contain information about the house number, although the latitude and longitude shows at a building with the house number I searched for.
For example, when I search for "Einsteinufer 17", it suggests "Einsteinufer, 10587, Germany", which is street name, postal code, country name. But the marker is positioned at exactly Einsteinufer 17.