We (3guys) stayed at nobus‘s for 5 days. We had great communication and nobu redponded within minutes - so there was no problem although we‘ve never met. The check-in was very easy - we got all the information we needed. The apartment is equipped with the basics you more or less need. The neighborhood is quiet & lots of restaurants are within 2-10min walking distance.
I would very much recommend staying at nobu‘s in Ikebukuro!