Was it culturally acceptable for the sinful woman to enter the Pharisee's house to see Jesus?

This is an odd question I know and I'm not very hopeful I'll find a good answer. But has it ever stricken you odd that in Luke 7, the woman who comes to see Jesus just straight walks into the Pharisee's house unannounced? I'm an American, and I could never imagine a random stranger walking into anyone's house and it be acceptable. So, was this a normal thing in Jewish culture at this time period?