Choosing markets and COC

[Luis Silva]

Hello, biggerpockets community! I'm an aspiring STR investor, and I have been focusing on finding a good mountain place, or any other depending on advantages, that could maintain bookings all year long with no too pricy properties, can anyone recommend some markets? And the second thing I want some advice on is what is an acceptable COC? is 20% a good return? is setting a 30% COC return goal too ambitious?

Thank you!