We enjoyed our stay at Ting's very much.
The video describing how to get to the place was perfect. Location is excellent, good restaurants nearby - both cheap and delicious - The metro is a couple stops away and we bought 72 hour metro cards for 1,500 yen at Narita. There is a train from Narita right to the Asakusabashi station, and back for 1,250 yen each way, so if you research the times correctly you don't have to switch trains with luggage. The apartment has everything you need, the only downside is that the toilet is located in a separate room outside the apartment, but it's yours to use. The PocketWifi was very useful the first couple days, but then penalized us for using more data than both of our phones reported so we ended up buying local 7-day sim cards for around 2,000 yen which gave us good internet.
The bed was firm and comfortable and the amenities in the room were exactly what we needed.
All in all, a fantastic stay and we'll be telling our friends!