How long is too long to be vacant?

[Brian Moyers]

This is my first buy and hold single family. It has been on the market for just over a month and I have adjusted down rent 3 times already. It’s priced fairly but I am getting nervous as each week passes by without a tenant application. Is one month vacant longer than you would usually expect? I was hoping I would have had an application the first week! Pipe dream I guess...