Asagaya is a great location, offering tons of places to eat and easy access to trendy Koenji. Fast train to Nakano, Shinjuku and close to Shibuya.
We didn't have time to check out the bar on the first floor, but the bar owner was friendly. The room itself is plenty of room for two. The fan should be kept on the entire time and that helped a lot with the drain smell (unavoidable in Tokyo and older plumbing)
Only thing that could be better would be new pillows; the sheets were clean but the pillows are old so have a sweaty odor to them.