1 Bedroom Apartment in Polanco Mexico City

Hi! I'm looking for an apartment in Polanco (any section) or its surroundings to move in at the end of October or November. I'm looking for something with 1 bedroom only and that accepts pets. I have a small cocker spaniel. If anyone has something available or knows of any apartment/loft that will be vacant around those dates, could you please send me the info? Thank you very much!