YES!
Whether it's you or another family member who is looking at assisted living, you should visit any facility you're interested in, at least twice, before making a decision. You need to get a sense of what it would be like to live in this facility.
It is suggested that one visit be on a weekday so you can talk about your concerns and questions with the management or sales staff person.
Another visit should be either on a weekday evening or on a weekend so you can see what services are available to residents during these times when fewer staff are on-site.