My wife and I stayed at Cityinn for 6 nights using our visit to Taipei. We intentionally chose Cityinn because it is a distance away from Ximeding - far enough to avoid its bustle and din but near enough to walk there (3 mins). It is a minute's walk from Ximen MRT's exit 3 - super convenient - and opposite a rather posh though quiet shopping mall with affordable restaurants at its basement.
The room is of a decent size, with a double bed, small desk with water flask, fridge, safe and a mini open closet to hand clothes, all without impeding two persons walking around the room. TV comes with free on-demand latest-ish movies. Bathroom is well stocked and spacious, with pleasant creature comforts such a heated toilet seat (!).
It must be mentioned that the lobby provides free coffee, tea and hot chocolate, not to mention cup noodles between 10pm to midnight. What's more impressive is an equipped kitchen in the basement that also has free drinks (Jura coffee machine), mini oven, microwave and a sink. There is also free usage of its washer, dryer and (flimsy but no complaints there) standing steam iron.
Overall, a fantastic stay!