If you are using the excuse of a house sale and coming back to sign paperwork (I use that one often), be sure to give a distant address that's not the one on your ID when you make the reservation. Hotels never confirm the address on your profile with credit card companies for some reason. Your back story will be confirmed if they happen to notice the local address on your iD.
If the MSC is asking for you to do a shop that's not suspect, let them also allow you to modify the assignment so that you will not be suspect.
-If the assignment requires a phone reservation, reserve over the web and make a separate phone reservation after checkout that you can cancel.
-Book something more than just a basic room.
-Ask about a room upgrade at check-in.
-Book a 2-night stay and then leave after 1 night, or ask to change it to one night when you check in.
-Ask for a corporate rate when you make the reservation.