There definitely is a trend. What once was alternative (exposed piping and brick; modernist artworks; current music in the hallways/elevators/restaurants; vibrant colors in the room; wall sized photos elsewhere; etc) is now mainstream.
Case in point:
And it’s called, following the trend, Hotel G.
(Why so many hotels M, G, S – why no Hotel L? Hotel J? Doh, Hotel U? There’s a mystery here).
Not that I dislike it, quite the contrary.