I chose the annex, apparently annex is ' vintage ' and much more smaller building than the main building just in front of it, The room was small and a bit awkward layout to maximize space, about 2.5 m x 5 m, they give very clean bedsheets, but when you remove the bedsheet/accidentally move it, the bed is very dirty with mold all over the bed, I had to turn on air purifier all times otherwise I will got coughing because dust. The aircon indicator shining bright green just next to bed is very distracting to sleep in the dark, the room is a bit dark, since main lamp is 1 ceiling lamp which light directly above the bed not in baggage/table area. I stayed here for 3 nights because very strategic location to Ameyoko, ueno park, subway & jr lines, combini is just in front of hotel, and I just use the hotel for sleep only, so it 's not big deal for me. The front desk staffs are quick and helpful, especially I had to mention the guy on duty on July 10th afternoon when we checked out he is very helpful to provide us with keisei information and to help us bringing some of our 3 big luggages downstairs since we're on hurry back to narita. When we booked this hotel we had troubles communication with the hotel they didn't replied our email, Instagram, Facebook and fax 1 month before check in date, until I finally had to make international call directly to hotel to confirm & asking questions. I wished they had email as communication method.