It sounds like the OP was actually an excellent host, and that's worth something on AirBnB. The landlord wouldn't necessarily be able to consistently pull in the kind of high-quality guests by himself.
The OP is a parasite, abusing his landlord's resources for gain. Also, if he hasn't declared his 'rental' income for tax purposes then his problems are only just beginning ...
The OP pays his rent. He abused his landlord's resources in the sense that his lease prohibited his behavior, but there's no need to label him as a parasite. His behavior is no more parasitical than the behavior of the landlord himself. If you have no moral objections to rent, your objection to someone creating value by providing rental liquidity and turning a small profit while doing so is bewildering.
>"He abused his landlord's resources in the sense that his lease prohibited his behavior"
He signed an agreement with another party saying he would not do what he ended up doing, for profit. How are you equating that with the landlord collecting rent?
Maybe if the landlord signed an agreement with one rent price, then started charging a higher price, you could equate the two behaviours.
