I stayed at dormy inn asakusa for 3 nights. The hotel location's good, near Sensoji temple especially for anyone who is going to Nikko and planning to take Tobu line as the station is just a few steps away.
The hotel offered free ramen at night. I tried and loved it.
Room was clean and tidy. Sumida river's at the back of the hotel.
There're many restaurants nearby and you can ask the the hotel for the guide map or simply ask the staff they're very helpful if they don't know they will search for you.
I had a 2 years old daughter with and they gave us a small gift for her and I think that's really lovely.
There's a washing machine and dryer on the 10th floor too.
The thing I don't like was there was no free wifi in the room. I stayed at dormy inn hatchobori and there was a free wifi in the room.