I think that those settings would cause the boiler to cycle a lot and be inefficient. I don't have enough experience to tell you what it should be, but while that may have been reasonable if making DHW, I don't think it is best for space heating. Some boilers cannot tolerate the return water being much colder than the source. I have no idea if yours is one of them. On the new, high efficiency ones, they'll cool off to ambient, and only turn on to prevent freezing if the system isn't calling for heat in some manner. Older ones cannot handle that. their heat exchangers are not designed for the thermal stresses of that. Most radiator type systems are designed for 180-degree water to provide their full output. Obviously, you don't need that all of the time. Your boiler probably isn't able to adjust the output dynamically, so if a lower temperature would work, it could run that longer and you'd be more comfortable. A constant even heat rather than on again off again is more comfortable, if your system can provide it. Retrofitting that capability to an older system may not be easy or ecconomical.
Hopefully, someone who has more practical experience will answer.