We stayed for 3 weeks in Via Inn Akihabara, and we had a very pleasant experience. We loved the staff's courtesy and professionalism and the cleaning standard. we booked an economy room, so obviously it wasn't like booking a suite, but I found the "value-for-money" aspect awesome (considering also the free breakfast, free wi-fi, the washing machines etc).
The hotel is very close to the main train station, a great pro for us (approx. 3 minutes by feet), which is very strategic to explore the whole city (basically, from Akihabara station you could easily reach every corner of Tokyo, thanks to Yamanote Line, Chuo-Sobu Line and Kehin-Tohoku Line).
I would warmly recommend Via Inn Akihabara, especially if you are a young couple who doesn't spend lot of time inside the room and want to save some money, without renounce to a very comfortable accommodation.