Pro: location is great. 10m from Ximending area but in a quiet alley, hence the convenience without the noise. Food shops all around. 7-11 within 10m. 24h coin op laundry within 200m. Ximen station is just 100m away.
Room is big (mine had a patio where the fridge is placed with the electric kettle). You can put at least 3 big luggage inclusive of the patio area. But not sure if all rooms have the patio. Got a peek in other rooms when they were cleaning, still big but no patio. Water pressure is fantastic. But be warned though, toilets are compact. If you want big baths with tubs etc... go find a 4-5 star hotel.
Overall, fantastic stay.
Con: nothing much except that the entrance to the rooms is through an autolock door. And there's a dark area on the left of the door before you go in where there's the fire escape steps is located. At night, the area seems a bit dodgy (it isn't) but for single female travellers, it may be a slight put off. Another thing, the autolock door is a bit slow in closing, just be a bit mindful of things after you walk through. Taiwan is a safe country but then, no harm in being a tad bit alert.