assuming you have running water, yeah you should be able to find a model that works. if you mean your landlord "won't let you", enjoy the sweet sensation of not giving a fuck what they think because they will never check. if for some reason you still can't, they make portable bidets that you don't even need to install. I have one that is basically just a water bottle with a curved nozzle for a cap, so you just have to fill it, aim, and squeeze to spray your ass. there are fancier ones with a battery and pump.