Cesar was very responsive, but also very inflexible. I booked a room with Cesar and did not pay attention to his cancellation policies, so that's my fault, but when my plans changed I asked Cesar if I could switch the dates to another time. He said no. So be very careful booking within the seven day window of your stay, and make absolutely sure that your plans are not going to change, otherwise you will not receive a refund and you will not be able to switch dates.