My wife booked a night in the hotel as we were going to the theatre and rather than travelling home late we thought we'd book a hotel room so we were more rested when we picked our boys up from their grandparents the following day. We knew we didn't have a window and weren't expecting lots of space but it was a very small room. Having said that it was a modern bedroom nicely decorated and clean and not having a window meant no light from outside getting in and a nice dark room to sleep in, however, one of us would have to climb over the other one to get out of bed.
Our room was in the basement, hence no window, unfortunately London is well known for its underground trains which run till late at night and start again early in the morning, this meant that every 2-3 minutes there was a discernable rumble of a train passing through it's tunnel. As we'd had a late night it wasn't long until this abated but if we'd wanted to go to bed before midnight it may have caused more of an issue. However, the next morning the trains started running at about 5.30am much to my wife's, and therefore my, annoyance.
The other noise issue is to do with the plumbing. It seemed that whenever someone else in the hotel turned a tap on, the water came flowing through a pipe in the wall of our room so that it sounded like the tap in our room was running.
One other thing, why so stingy with the milk pots in the room? Two little pots each. Yes we could have gone to reception to ask for more but I didn't want to do that in my pj's, at 6am and surely that is the point of putting tea/coffee making facilities in the room?

This was the first time in a Z hotel and thought the room was very well designed and had everything we needed. Bed very comfortable and excellent shower. We didn’t mind not having a window as it limited noise and made the room nice and dark. The free cheese and wine was a fabulous touch and was a great start to our evening and ended up chatting to fellow travellers. The only reason I can’t give a 5 is that during the night the air conditioning unit leaked on the floor- luckily missing our luggage but we did have clothes hanging behind the door. We told the staff in the morning and were offered a free breakfast but had a train to catch.
So would stay in another one.