"settle somewhere" is correct and can be used in written English.
You can use it when you are talking about finding a place to stay or live; for example, "We decided to settle somewhere in the countryside."
I'd like to settle somewhere.
I settle somewhere quiet, headphones on, and wait for oblivion.
The two wanted to settle somewhere with an art scene.
You spend your 20s moving around but you want to settle somewhere eventually".
Freedom gives them a chance to settle somewhere else and try their act again.
I don't have another property and would like to sell the house and settle somewhere else.
Once they settled somewhere, they could try again properly.
His strategy now appears to have settled somewhere in the middle of the earlier approaches.
I sort of feel, purely by accident, I have settled somewhere that's quite nice for me".
"It's nice to be able to get settled somewhere and be a part of something going forward," he added.
He settled somewhere in the South, unbitter and "well-adjusted", married an American and was invited sometimes secretly to Langley to speak, to tumultuous ovations.
