It is not illegal to give a tenant an apartment on a high floor even if the tenant has children. So this is not an issue.
Second, while him reprimanding you over the children's behavior was likely mean spirited, it was not illegal.
Third, since you are a month to month
tenant, they CAN end the lease with notice. However, this is where the issue becomes nuanced:
1) If they allege no violation, they can end the lease with 60 days notice per Delaware Code Title25, Secs. 5502.
2) However, if they allege a violation of the lease, they can give a 7 day notice. So he is alleging that your music was a breach of the lease (nuisance
to other tenants, perhaps?). If so, then someone in your situation can argue that there was no such breach and the music was within respectable levels. If the Court agrees, then this would buy you a little more time but again, since you are on a month to month, they can give you 60 days then and not even need a reason.
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