To be honest I haven't read any recent reviews. I pretty much know now what it's going to be like ! It is clean but does look worn out in places , I suppose it's runs on nearly full capacity most of the time so updating is difficult , I find it comfortable and convenient and that does what I need .
Breakfast in F&Bs sounds nice though

And 8 am is not too bad for a flight time , at least you feel awake by then !
If the beehive is shut ( can't see that happening with it now being summer season and Olympics ) then there is the Globe which is a Wetherspoons which is landslide at the north terminal , have a ride on the toy town train to get there .
Have a good holiday

PAT, as she works for them and probably get discount? Or might get a free upgrade , then the executive rooms are a bit nicer as they are built in the new block , you also get access to the exec. Lounge with free drinks and nibbles , so they should look at them , the only problem is that it feels like a long walk to get to the new wing , we got free upgrade to these rooms last time we stayed as I've got Hilton gold status and the rooms are a bit better and the bathrooms are more modern with a good walk in shower.