London's Waterloo

Is this for 10 people?

So I am guessing as for Edinburgh you want 3 or 4 rooms for your party of 10 people? It is helpful if you flesh out your request a bit. Do you have a budget in mind?

Premier Inn County Hall

If you take the underground (tube) back to Waterloo Station, be sure you find a fare gate/scanner and tap out with your Oyster card. There's at least one exit where you can walk right past the card reader without realizing it (at least you can if you are clueless, as I was). If you do that, you'll be charged a very high fare for that trip, and the daily fare cap will not apply. Not a good combination. In all the other tube stations I went through, it wasn't possible to avoid the fare gates, but I found it all too easy to do so at the particular exit I happened to use at Waterloo.

Thanks for the help with the hotels near Waterloo Station. Yes, 10 people, all family heading off for an adventure.