The Red Book of Westmarch, artist unknown
From The Hobbit (in the chapter, 'A Short Rest.')
On the party of Dwarves, Bilbo, and Gandalf coming to Rivendell from the West:
"They came on unexpected valleys, narrow with steep sides, that opened suddenly their feet, and the looked down surprised to see trees below them and running water at the bottom. There gullies that they could leap over, but very deep with waterfalls in them. There were dark ravines that one could neither jump over nor climb into. There were bogs, some of them green pleasant places to look at, with flowers growing bright and tall; but a pony tha walked there would never have come out again."
"... They saw a valley far below. They could hear the voice of hurrying water in a rocky bed at the bottom; the scent of trees was in the air; and there was a light on the valley-side across the water.
Bilbo never forgot the way they slitered and slipped in the dusk down the steep zig-zag path into the secret valley of Rivendell. The air grew warmer as they got lower, and the smell of the pine-trees made him drowsy... The trees changed to beech and oak, and there was a comfortable feeling in the twilight. The last green had almost faded out of the grass when they came at length to an open glade not far above the banks of the stream.
'Hmmm! it smells like elves!' thought Bilbo..."
On The Last Homely House:
"And so at last they all came to the Last Homely House, and found its doors flung wide.
Now, it is a strange thing, but things that are good to have and days that are good to spend are soon told about, and not much to listen to; while things that are uncomfortable, palpitating, and even gruesome, may make a good tale and take a deal of telling anyway. They stayed long in that good house, fourteen days at least, and they found it hard to leave. Bilbo would gladly have stopped there for ever and ever - even supposing a wish would have taken him right back to his hobbit-hole without trouble."
From The Fellowship of the Ring (in the chapter, 'Many Meetings.')
Frodo and Gandalf conversing while Frodo is resting in bed within Elrond's House:
"'What about Rivendell and the Elves? Is Rivendell safe?'
'Yes, at present, until all else is conquered. The Elves may fear the Dark Lord, and they may fly before him, but never again wilkl they liustemn to him or serve him. ANd here in Rivendell there live still some of his chief foes: the Elven-wise, lords of the Eldar from beyond the furthest seas. They do not fear the Ringwraiths, for those who have dwelt in the Blessed Realm live at once in both worlds, anbd against both the Seen and the Unseen they have great power.'
'Who made the flood?' asked Frodo.
'Elrond commanded it,' answered Gandalf. 'The river of ther valley is under his power and it will rise in anger when he had great need to bar the Ford. As soon as the captain of the Ringwraiths rode into the water the flood was released. If I may say so, I added a few touches of my own: you may not have noticed but some waves took the form of great white horses with shining white riders; and there were many rolling and grinding boulders.'"
On Elrond's House and hospitality:
'I am ready,' said Frodo. "Let's go and look for the rest of the party!"
'I can take you to them, sir,' said Sam. 'It's a big house this, and very peculiar. Always a bit more to discover, and no knowing what you'll find round a corner. And Elves, sir! Elves here, and Elves there! Some like Kings, terrible and splendid; and some as merry as children. And the music and the singing - not that I have had the time or the heart for much listening since we got here. But I'm getting to know some of ther way of the place.'
On the Hall of Fire:
"At length the feast came to an end. Elrond and Arwen rose and went down the hall, and the company followed them in due order. The doors were thrown open and they went across a wide passage and through other doors, and came into a further hall. In it were not tables, but a bright fire was bnrining in a great hearth between the cavern pillars upon ewither side.
"Frodo found himself walking with Gandalf. 'This is the Hall of Fire,' said the wizard. 'Here you will hear many songs and tales - if you can keep awake. But except on High Days it usually stands empty and quiet and people come here who wish for peace and thought.'"