It depends how the owner wants it. The most common ways are:
- Paying them in dollars with the dollars you have in cash physically
- Paying them in dollars via a transfer to their account abroad (most rich people here have this, aka most people wealthy enough to have a home to rent out, meaning they have more than one home themselves)
- Paying them in pesos at the blue rate
If they want physical dollars you can:
- Send yourself USD from your US account abroad to your Argentine bank account in your name in USD via a SWIFT transfer, minimum fee is ~$50 USD
- Send yourself money via Western Union and buy dollars on Florida Street
- Send yourself dollars via a digital cave, most charge ~5%, i.e. you send $100 USD to their account in the US and they give you $95 USD in cash