I have about 6 mats, all are heavyweight ribbed cotton in different patterns, in either white or charcoal. They are gorgeous and have often been used as a cover on my coffee table.... or as a runner on a bigger table to set a vase of flowers on (straight from being laundered, I add).
They've all been picked up in charity shops for a couple of £ each and it's quite possible that they are meant to be table covers/runners.
Because of their size, which would be larger than a standard bath mat, some of them get in the way when opening the bathroom door so as a rule the mat in use sits folded over the side of the bath and is put down for showers/baths.
The floor is charcoal tiles and I only use the one mat at any time.
I keep a small microfibre mop head with an extending shaft in the hot press down the side of the hot water tank, and this is wonderful for a quickie wipe around the bathroom floor if needed, just a spray of Flash and a quick shuftie with the mop... £1 from Pound Shop.
The mat/rug from Dunelm in my lounge didn't even cost anywhere near £65.