We went there on our first night on the island, around 7:45 p.m., having called ahead at around 4:00 from the ferry. It was the penultimate weekend before they closed for the winter, and the restaurant was pretty packed when we got there (after a slightly tense ride along an unfamiliar, winding, and unlit road about 5 miles out of town--note: designate a driver for the ride back, or moderate your alcohol consumption). People appeared to be having a wonderful time. Probably because of our late reservation, we got sat at a table in the front room, which was a little chilly, particularly when the front door was opened. But that was the only, minor off-note of our entire experience.
What a great meal! I'm a vegetarian, and ordered three appetizers (although the vegetarian entree also looked great, I wanted to sample a bunch of different things). My partner got the calamari appetizer and the cod entree. The cocktails and wines by the glass were great, and the service was friendly and attentive, without being overbearing. Our food arrived methodically, and was well timed. There wasn't a bad note in any of the dishes we ordered. The complimentary soup (ginger carrot) was delicious, as was the dinner salad, and my appetizers were extraordinarily flavorful. I have the utmost respect for a commercial chef who is unafraid of spice, and this meal was one of the best I've eaten in that regard. My partner said her food was delicious also.
After dinner, despite not having been able to finish my dinner, we ordered the creme brûlée and some bourbon and port. I noticed the main dining room was now empty and had a roaring fire going, so I asked our host if we could move to a table by the fire. She enthusiastically agreed, and we had a lovely warm end to our evening. We were the last people there, but the staff was unfailingly gracious, and we didn't feel rushed out.
I was particularly impressed by the food and service at Duck Soup Inn because we'd had a terribly mediocre experience the previous night at the highly recommended Sitka & Spruce in Seattle and it was such a delight to follow it with a meal crafted by a chef who did such creative things with vegetables. But even standing alone, The Duck Soup Inn is a first-rate restaurant that I highly recommend to anyone visiting Friday Harbor.