1. Settlement is not the same as Full Payment. And in your case it is a "Written Off" status which is still bad.
2. You messed your credit history by ignoring when they raised the bill. Why didn't you report the card as stolen ? Why didn't you dispute the charges ? When you have filed no such complaint, can the Bank Trust you ?
3. Nothing Wrong in Going for home Loan, but I doubt you will get it with such bad credit behavior.