What a great place! Check in/out is super convenient and the place itself is very clean, spacious and very thoughtfully equipped (umbrellas and ipod dock, awesome!). You should know that the bed is on the upper level. You can't stand upright there because of the low ceiling - but this didn't bother us the least.
I doubt you will find a better place in downtown Seattle for that price and can wholeheartedly recommend the loft! Bonus: The fantastic sushi place right next door and the one block walk to the light rail & bus station.