Jen first if he was the sellers agents, unless you signed hiring him as a "dual agent" then he did not represent you, but did have the duty to disclose propertly. it will depend what it states on the seller disclosures and if they lied. you may want to check with a lawyer to get an opinion on what your rights are. If they lied about the pool and basement in writing you may have a case, Oral arguments are hard to prove, so check what is in writing. As far as a rental that is not a disclosable issue.