First of all: remodeling bathroom causes me paralysis. I've never done it before, obviously. I've designed them in my mind and my in-laws made it happen for the half bath in the condo but when it comes to our house, gah! Paralysis.
I think the guest bath has more of a collected idea instead of a bunch of rando pins floating as evidenced by my pinterest board for the guest bath. There's definite recurring themes. One thing I can't ignore is the fact that I would love to have dual toned walls with the top being almost black and the bottom part being subway tile. Pretty much like this idea.
I realize the bathroom has no windows and the black might be too much but I'm gonna give it a shot and also hopefully install a skylight in there, needs one badly. But back to designing bathrooms, sheesh, I think the key to bathrooms boards is a bunch of little things gathered together to create a sort of overall aesthetic much like my hero Nicole with this for her half bath and thankfully she sourced everything because I have no idea where people buy things like "pedestal sinks" other than Home Depot or Lowe's or Ikea. Anyway, good to know for the decorating process.