Really great location - close proximity to all shops and restaurants but in a quieter area. Very walkable neighborhood and close enough to Yoyogi station, even with a lot of luggages. The room is snug, more ideal for 2 people even though there's 4 beds (especially if you have more/large luggage), but it had everything we needed.
Beds are on the firmer side, but we were able to use the extra comforters as a layer of cushion. The bathroom doesn't have much room - so those who are taller than maybe 5'5 may have difficulties fitting in there seated. Make sure to leave time to turn on hot water before showering and keep them short - otherwise you might run out of hot water.
Check in instructions were very thorough and helped us find the apartment easily. A translated guide/instruction manual for things inside the room would be helpful, but we managed with G Translate.