If you get it, consider yourself fortunate for the extra profit.

Cons: Expensive to maintain - can push tenants away who don't have the extra money and you certainly don't want pool cleaning coming out of your monthly rent. 

If I have a PM to take over management work, the extra profit of multi-family over single family goes to PM's income.

As long as you have extra reserves given the volatile nature of the world right now, I would continue to invest.

As a result, for the new house I would buy, they want to charge an extra 25% of my current mortgage as a down payment on the new house, in addition to the 20% down....Do you know anything about this?

Your capital is more protected from the extra doors and your cash flow can grow exponentially.

I would not replace the carpeting, can it be glued down until they get the dog and all the extra people out?

I also had a renter that received the $1,200 stimulus and $600 extra a week on top of her regular unemployment.

This made me an enormous cashflow since there was initially nor mortgage (about 900/month).

They will charge 8 to 10% based on property condition and the local market.After you remove all the extra expenses from your balance sheet, this deal might be tenable.