I've stayed in John's place for a week for working travel. It is perfect for me. The location is great, walking to the old street metro station within 10 minutes, even much closer to my work place. The flat room is spacious, clean, warm, with all office configurations. Tea, coffee, plenty of bottled still water are available. I use my own toilet/bathroom which is very clean and convenient. The flat is in a secured apartment which is quite safe.
John is very nice, thoughtful. Everything you need is there already.
I hope I will stay John's place again next time.
His place is highly recommend!