To be honest, the hotel itself, is an average business hotel in Tokyo. However, based on it's price, you can't expect more. It's almost the cheapest one I can find in Tokyo area...
First of all, it's closed to JR station, only 3 minutes walk from the station. The location is very convenient. Starbucks, convenient stores and budge restaurants, ect. are all within 3-minute-walk distance. Moreover, across the street, there's a supermarket, where you can buy cheap food at night.
Secondly, Otsuka JR staion is next to Ikebokuro Station, which is one of the largest stations in Tokyo, with subway lines and JR lines...
Thirdly, the hotel is new. Everything is in good condition so far >_<
Last, it offers breakfast, and free teas and coffee.
Disadvantages:
1. Compared to other Superhotels, the choices of breakfast are too limited...
2. There's only one elevator, and it's very small. Therefore, in the busy morning, you might have to wait it for a log time..