Dividend stocks are a staple among income investors, but most of them make payments to shareholders only on a quarterly basis. For those seeking income for their monthly living expenses, stocks that pay dividends monthly are a lot more appealing. With that in mind, let's take a closer look at monthly dividend payers Apple Hospitality REIT (NYSE: APLE), San Juan Basin Royalty Trust (NYSE: SJT), and Solar Senior Capital (NASDAQ: SUNS) to see if they're worthy of a place in your dividend stock portfolio.Travelers need a place to stay when they're on the road, and Apple Hospitality offers the basics through its portfolio of hotel properties.