I am sitting in a vrbo rental just south of Yachats right now and it is beautiful here. Would highly recommend the "Oregon House" properties managed by (
https://www.sweethomesrentals.com). We are in Harmony at Oregon House and it is perfect for a couple. It is a duplex with Serenity at Oregon House. It has a private access to the beach below and balconies/benches to watch the sunset. We ate at Luna Sea Fish House in Yachats last night and the fried halibut and chips was delicious, as were the fried tiger prawns. We went to the Oregon Coast aquarium up in Newport today and enjoyed it, ate at the Chowder Bowl (chipotle shrimp wraps were delicious), and did some agate hunting on Stonefield Beach. We are going up to Depoe Bay tomorrow for a whale watching boat trip. Will let you know how it turns out.
FYI, Crater lake is still open, but the boat tours of the lake and out to Wizard Island are done and won't resume for at least the next 3 years. You can still walk down the trail to the water for now, but that will be closed in the next few weeks probably.
If you are looking for something in between, we stayed at Umpqua's Last Resort (
https://www.golastresort.com) on the NorthUmpqua River about halfway between Roseburg and Diamond Lake. We stayed in one of their glamping tents and it was really well setup. King bed with bed heater, running water in outdoor sink, adirondak chairs, charcoal grill, fire pit, lights and electrical plugs, etc. very comfortable and affordable. There is lots of good fishing and hiking nearby. Watson Falls and Toketee Falls were a couple of favorites with relatively short trails to gorgeous waterfalls.