This place is in a great location with convenient access to convenience stores, grocery stores, diverse food spots, and lots of fun places to walk around Asakusa. The proximity to Sensoji Temple is hard to beat - we stayed over New Years and walked to all of the yatai food stalls that were there for the holiday.
We stayed with a 1 year old and found the amenities of having a kitchen and washing machine to be extremely convenient. The fridge and freezer were well sized, and having children's tablewear and a folding highchair included for free was great! The only place to hang laundry is outside (no dehumidifier in the bathroom), so we weren't able to do laundry on rainy days.
One caution is that the first set of stairs does not have a handrail. We're used to climbing lots of stairs at home, but going up and down really narrow and steep stairs with a baby in your arms can be a little nerve-wracking without something to hold onto.
The hosts were very responsive and kind. Great value.