Help me decide between two places for my romantic vacation?

Me and My boyfriend are going on a vacation for 1 wk in august. We have been on plenty of weekend retreats together but never for a full week, so this one is kinda special to me. He has always planned everything before but this time it is my turn. So we are down to 2 choices and I want to leave it up to the answers community to decide.
Choice A
A road trip from our home in seattle to yellowstone national park in WY. We would stop off a few places and stay a night or 2. Drive thru ID, MT, WY, and WA. Just the two of us.
Choice B
Take a train from our home in Seattle to a beach town in northern California(would be great if you could suggest 1), rent a lil cottage or stay in a hotel on the beach for a week.

Please tell me if you think we should do choice A or choice B and why you think we should choose that one. If you pick choice B please let me know where a good place in northern Cali is. Thanks for the Help! You will be rewarded for GOOD answers!

I’d do choice B. I’m never been to northern California, so I can’t tell you a good beach.

I have been to Yellowstone, and it was a pretty majestic place. Wildlife, beautiful scenery, geysers, beautiful colorful pools. But the geysers and pools release sulfur, so the entire place smells of rotten eggs. That wouldn’t be very romantic.

The driving doesn’t sound very nice either. Don’t know about you and your boyfriend feel about it, but driving is stressful. Not very romantic either.