There was an article a couple of months ago, shared all around urbanist social media, lamenting that rental prices in Seattle were declining because of an increased supply of housing (it was in one of those ubiquitous business insider journal type magazines). For a variety of reasons, it can be hard to increase supply, but that's the best way (barring a recession) to lower the cost of housing.
And it's not even that, rental prices in Seattle haven't declined, just the percent growth rate in rents year-over-year is declining.
Which makes it even more ridiculous to see them lamenting it. They seem to feel like they deserve double-digit rental growth rates every single year, and "falling" to a single-digit growth rate just won't cut it.