Must a California hotel honor a rate if you extend your stay?

they do not have to give you the same rate if you extend your stay. different nights have different rates. if you were quoted a rate for the additional days they would honor that but if no rate was quoted and no agreement set prior then they can charge you that days rate. as for being forced to allow you to stay beyond your reservation that is wrong. they don't have to allow you. maybe they are booked and some hotels have a maximum amount of nights they will let you stay in order to keep people from living there,.