I feel your pain.
Some people feel they're above the law, regulations, safety and common sense.
Nowadays, these individuals manifest themselves abusing common spaces and areas that should be kept empty at all times, for example.
Quarantine neans stay behind your appartment walls, not roam the building ignoring the common good and violating current and temporary health regulations and potentialy making certain areas a serious health risk.
Regarding houses, certain areas like Caballito still have a mix of old houses and newer buildings.
Must make a list of trade offs. Peace and quiet, isolation, safety, favored spots (commercial, entertainment, leisure).
I enjoyed my years in Caballito coming from Recoleta and spotted a few bunkerlike houses here and there. There were also beautiful small traditional two story houses like the ones in Belgrano.
If secluded on a short «cortada» even better.
Caballito at night might not be the safest place now.
Screams and shouts were common at night crossing the tracks between Pq Rivadavia and Pq Centenario.
Giving it a shot by renting is a solution unless the real estate market crashes or provides excellent opportunities in the near future.
I was very happy in Caballito but far from fancy.
Also make sure the area you pick has no recurring utilities issues like Almagro with electrical power, for example.
Iz