You'd be hard pressed to find a better location in Taipei than Greg and Risa have here. If you stay, you'll find that there are more restaurants and coffee houses within two hundred meters of the front door than you could care to visit in a year; that you are across the street from NTU's lovely main campus with quick access to the track and gym (if you choose to sign-up); that five minutes down Roosevelt road past NTU is a good four-block night market; and that two metro stations are within a 400 meters.
The space itself is quite clean and large--particularly by Taipei standards. The kitchen, dining room and living room are great spaces to hang out in and--if you're a student--to do some homework. The rooftop garden is also a good spot to pass some time.
All said, the best amenity, feature, what-have-you, has to be the hosts. Greg and Risa are an incredibly kind and generous pair of newly weds. They offer great conversation, great suggestions and give the place the homiest of feels. Book for them alone!
The downsides to the place are limited to (1) the bathroom which is shared and tends to get a bit dirty and (2) the right range burner which won't light very easily. (Seriously, that's all I'd really moan about.)