It should be because you rented a house from the second landlord!
What you need to care about is the time limit for renting between the second landlord and the big landlord. Is subletting allowed? !
If subletting is allowed within this period, then your contract with the second landlord is established.
Otherwise, it will be more troublesome. If your contract with the second landlord exceeds the original term, you may be driven away by the big landlord.
As for the price, you need to know the market situation.
Since you are the second landlord, of course you should profit from it! There should be no illusions.