We loved Sarah and Mark's loft! My husband and I spent a few days in Seattle to celebrate our anniversary, and staying at Sarah and Mark's made it a very relaxed experience. The design was modern and comfortable (and exactly matched the photos) - we both remarked that we felt "at home" in their space. Our hosts were communicative and thoughtful - Sarah checked in a couple of times to make sure we had everything we needed and restocked the K-cups and paper towels for us the day before we left. We're foodies and did some cooking in the kitchen - there were enough supplies for basic cooking for two, which worked for us. They have a Keurig you can use and supply some K-cups for guests' use. There is Internet you can use and a TV with a few basic channels. The bathroom was small, but airy and light, and there was both a shower and tub.
The one thing to keep in mind if you're unfamiliar with the geography of Seattle (like we were) is that West Seattle is a hike from the city - you can walk 10 minutes to a bus line that heads straight to downtown in 30 minutes, but we wished we'd rented a car a few times, even though we generally found the public transit to work for us. Thanks, Sarah and Mark, for a great stay!