Below is a Stellarium view of the location of ASASSN-18fv, very close to the 5.1 magnitude comparison star near the Eta Carina nebula and star, a variable whose brightness I often estimate.
A binocular finder chart with a slightly different orientation from the Stellarium screenshot is shown below:
This is a crowded area of the sky, and being so close to the 5.1 star, it may be tricky in a low power binocular field.
Rob Kaufman posted this image of the nova, with yet another different orientation:
I have not yet had the opportunity to observe the nova; hopefully in a couple of days.
The AAVSO alert notice has more details.