I would advise you to
Ti consiglierei di lasciarle andare.
I would advise you to let them go.
Ti consiglierei di non comprare quella casa.
I would advise you not to buy that house.
Ti consiglierei di lasciarci andare.
I’d advise you to let us go.
Ti consiglierei di lasciarli andare.
I would advise you to let them go.