Will they approve me based on this...?

In 2006, I was offered an out of state job. I submitted my 30 day notice advising I'd be vacating. A week after submitting the notice, I was advised that the job had been canceled. I went back to see if I could keep my apt and was told that they would try to place the new tenants elsewhere since they had already leased my apt. I was told not to worry and if I dont hear anything I should know everything worked out. I umed all was well but about 3 weeks later, I received a message requesting my keys! They thought I had moved out and wanted my keys. The new tenants were moving in on Saturday and this was a Thursday?? No one had come to clean or do repairs or anything. My apt was being very lived in by me!! I didn't understand or believe what was going on but was told I needed to leave or be charged for staying longer. The manager wrote a letter explaining this and I still have it to this day. Unbelievably, I got my things out of my 2bd/2ba apt in 24 hrs. The district manager called and apologized and offered placing me in another complex but it was even more expensive than what I had been paying. The onsite manager wasnt apologetic at all. Looking back, I should have verified things and not trust her words since she had my written notice and that holds up more than a verbal promise. I had so much resentment and didn't want to pay it. I'm ready to get another place now since I've been with family since then. I've only lived in two complexes and have had FLAWLESS payment history at both properties besides this incident. My credit isn't that great right now and I'm worried this will keep me from being approved. I received a letter from the collection agency settling for half today and even if i pay it (and I will), it won't be deleted from my credit report. I'll be looking for my place this month. .What do you think my chances of being approved based on this information?