No need to say anything about La Conner itself (it's amazing, if you haven't been) and this place is a very short walk to EVERYTHING (it's a very small town) and with a dedicated parking space you don't have to worry even on a crowded weekend where you'll park.
I've stayed in a lot of vacation rentals, all over the US, and none of them have been this nice. I'll put it this way - you can always judge a rental by the quality of the towels and the toilet paper, and both were way above what you normally find, as was every single other detail, small and large. For example, the floors don't creak, I mean they are SILENT and it's a 2nd floor apartment, I honestly don't know how they did it but hats off to the architect and remodel crew, whoever they were. The beds were extremely comfortable, and this is from someone with back problems whose regular mattress is one of those $5k self-cooling space foam things.
Bottom line - if this place is available, just take it. It's not possible to regret it, unless you can't do stairs (2nd floor, no elevator)