APA Hotel Roppongi Six was great for our stay, and would highly recommend for the price we paid.
The staff was super helpful and kind. There are drink vending machines on site, a microwave on the main level, pants press, our bed was made daily (even though this wasn't important for us), and towels were refreshed daily. It was raining during our stay, and they kindly provide the clear umbrellas when you ask, as well.
Even though the rooms are small, it was perfect enough for us since we could store our luggages under the bed. We also transported some of our luggage to our last destination with the help of the front desk staff.
Our only complaints:
-There was a bit of a faint smoke smell that bothered my partner, but I didn't really notice it.
-The rooms were a bit dusty, my partner's allergies acted up a little bit, and it felt a bit stuffy.
-The pillows were not comfortable.
Other than that, the rooms were pretty clean. There is a 7-11 and Lawson nearby. The station is a bit far, about a 15 minute walk, so that was a bit tough at the end of a long day. Otherwise, the hotel is tucked away from the super busy area of Roppongi and was quiet. Don Quijote is about a 10 minute walk (but uphill on the way there).
The restaurant on site was good for a casual meal, especially if you're too tired to walk and look for a spot.