Yes, do let us know what you think of it!
I'm a big fan of the Yotels, but have only ever stayed in the 'premium' rooms, as I've been there with MrsStut. Their layout is quite clever - a double bed that retracts into a sofa, F flatbed style, at the touch of a button. Only downside is the noise from toilets flushing (yes, really) so earplugs can be handy if you're a light sleeper.
The standard rooms have an odd layout - effectively, you're in a bunk bed, but the other bunk is in the adjacent room. I'd be intrigued to see how it works out!
As you're in T4, you'll also have a pub outside the hotel (on the mezzanine level) as well as a branch of Café Rouge (nice mussels) and Caffe Nero (nice coffee) upstairs.