The best deal ever?!!!

About a year ago, I spotted a four plex, a duplex, a commercial building, and a single family home all listed on the MLS and I noticed they were all owned by the same lady. I went to my agent and told her I wanted to buy all of them from the lady. I put in an offer of 50% less than what she was asking and they countered me back about 20% less than list price. I decided to walk away from the deal and a couple of weeks went buy and they came back to me and cut another 10% off the price. Still not satisfied, I held my ground. I ended up with them at about 45% under retail price of what they were asking. Then right before closing my agent called me and said "hey, they are throwing in another single family home for free!" Yipee! What happened was the woman who owned the properties was left the properties by her deceased husband. She was not a landlord and she wanted to get rid of them and I guess she just decided to give me the last one "just to get rid of it". I was happy until I went to look at my "free gift". It was the crapiest looking house I had seen in a while. But it sits in a good neighborhood. I walked in and walked out. This house is embarassing to own. I wanted to bulldoze it, but the city wouldn't let me build something new there because zoning had changed and now the lot was to small to build new. I ended up putting just enough into to make it livable and now it cashflows me about $300 per month. I couldn't beleive how fast I rented it and the tenants are great! The rent is low and the couple is just starting out. I have considered just giving it to them! Maybe I should. Either way it pays me over $3000 per year.