@Joanne844
It depends on what kind of personal information.
I get a lot requests for the address after booking but before the address is sent to them. Also, my name and phone number for visa applications. I always supply these as it's really annoying trying to get a visa and they need detailed information of where they are going to stay.
However, if the personal information goes into what your job and personal income etc. (which people asked me to provide for visa applications believe or not) are, then they are actually putting you down as a sponsor, so obviously don't do that.
Again, name, address, phone number is perfectly normal.
Hope this helps.