Very very bad!! Would leave zero if I could. The map for vacuum cleaner disappears, the set restricted areas also disappear or at random places it thinks there are restricted areas. Not possible to rename areas and there is absolutely no logic behind the cleaning pattern. The vacuum goes in weird circles, zigzags and god know what else without even covering full area!! It is much faster to vacuum with "old" cleaner as it takes literally hours to fix the map and cover all area with robot vacuum!!