I have stayed in the gatwick one twice before Orlando flights in a standard and premium. I think a standard is great for 1 person but a premium is great for a couple. We have wats had excellent customer service, wish there was a yotel at Manchester!
I have stayed in the one at Schipol and couldn't fault it.
Comfy bed, ensuite, TV and free Wi-Fi. It was perfect for relaxing and freshening up in the event of a lengthy stopover - which was more often than not unfortunately.