Widow is disgustingly broken on Havana

Point A Attack

Using the building with the access point to the left of spawn is a strong anti widow area

When the payload is past the first corner, you move to the building to the left of the main one

There is a staircase for access to it

Widow almost always goes to the window overlooking the checkpoint

Point B attack

Use corners are flanks to avoid long sightlines in this area

Point C attack

You wanna be careful here

The road to the fort is extremely open

Using the tower and lower access route can help you flank to remove the widow