This is a beautiful space and you can't beat the location. It is in the middle of shops, restaurants, bars and transportation. Everything you want to go in Amsterdam is either a short ride away or walkable. The apartment is beautiful with amazing views. Every appliance is available to you and there's a market across the street to stock up on snacks and wine. The beds were extremely comfortable and the neighborhood is very quiet (at least 4 flights up). Check-in was a bit confusing and there was a bit of a slight delay when we arrived, but I'm always prepared for the unexpected.
However...the stairs. My 61 year old very active mother was with me and she was aware and prepared for a four floor walk up. But these stairs are STEEP. Think more attic stairs than apartment building stairs (for those who are not familiar with stairs in Netherlands). I would not recommend large or heavy luggage. They're easy to go down with, not so much going up. Aside, from that caveat, I would recommend AND stay there again.
Also, a HUGE thank you to Lora's husband for helping my mother with her giant suitcase.