Yes or no, if yes, then "sorry to disturb you, can I call you back in an hour, or would tomorrow night at 6pm be better?"

Even if they stop paying rent. if the listing says occupied, drive-by only, or don't disturb the occupants, that could just mean that they aren't going to show it until an offer is accepted.

If she’s a loud nuisance and disturbs the peace then she’s not in compliance. 

Probably harder to keep tenants in there if its disturbingly loud too often.

This way, you don't unnecessarily disturb tenants by weeding out the tire-kickers and looky-loos as much as possible and find the serious buyers who are ready, willing & able to buy the property. 

When we refinish the basement, we just lay a new floor over the old asbestos tiles and dont disturb it. 

There is a 99-100% chance you have it in the house if it is as historic as you say and if you're going to redo the floors/kitchen, you're going to disturb it.

The main tenant does not cause any disturbance and always pays the rent on time.

However, if you bring in tenants who cause a nuisance, disturb neighbors, or simple don't conform to the general profile of the community (if it is all young professionals and they are 4 college kids sleeping two to a room, etc), you will receive less leniency from the board. 

Not sure if they burned, got torn down by the city, or some other crazy incident, but there is fresh tilled dirt when I get there.Some auction.com homes you can see inside, some are occupied and they advise not to disturb the tenants.