Last time I stayed at an AirBnb in Prague, the owners preferred method of communication was WhatsApp. When I went to install it I was confronted with no other

Last time I stayed at an AirBnb in Prague, the owners preferred method of communication was WhatsApp. When I went to install it I was confronted with no other choice than allowing it to import all my contacts, even though there was only one person I wanted to communicate with. I was aware of these vulnerabilities and generally am protective of handing out PII, especially information others have entrusted to me. So I didn't give it access to hundreds of business and personal contacts spanning decades of work and life. How do others deal with this who perhaps don't have the choice to just say "I'm going to text you instead for the 4 days we are going to have a need to communicate"? Do you keep a full set of contact data outside your phone's contacts for information you don't want shared? Private and public contacts?