NK House was a great place to stay, Jessie was very proactive about fixing the one minor issue we had. Our room had a great view of Taipei 101 and rooms on the north side had a good view of the river.
Very clean and safe, the check-in/check-out process was nonexistent, just show up and leave when you're ready (within the set times, of course).
Transportation was easy, a bus right out front that will take you directly to the MRT (train). Get an Easycard from 7Eleven and use it for everything. There's also a U-Bike station just three blocks away, great for getting around downtown on your own terms and very cost effective.
There are two Internet cafés next door to the building and a little convenience store.
Thanks Jessie for the hospitality!