Has someone you know been reallocated to a PPH? It's a tricky one if so as the communities there are so small that the experience is different, especially since now all Colleges are mixed, social life tends to be very College based.
If you are referring to the fairly standard email that comes out, asking if you would be happy to have a PPH as your second interview then my response would be to say no. Unless you are a mature student and/or an Oxford degree is more important to you than the College.