Overall fine stay.
Pros: The neighborhood is quite noisy at night but we liked how close great restaurants were - so many delicious places to eat and drink. Beds were very comfortable and there are space heaters provided that worked better than the wall heaters. The dishwasher is a plus! Hector was an excellent communicator throughout our stay as we had several issues at check-in.
Cons: Complicated check-in using the Nuki app. You need internet/phone service to download the app, unlock the door, and lock the door using the app. Keys are provided once you get in the apartment. It's all totally unnecessary and frustrating technology. I didn't have cell service but luckily my friend did, so I used her phone as a wifi hotspot to get in the apartment. We finally got in after a lot of app difficulty. Bathrooms were dirty and there were no extra blankets provided. It's winter so the apartment was really cold and we blew the fuse after plugging in the space heaters (don't plug them into outlets that share walls). The wifi password was incorrect. There are no towel hooks for your wet towels. The whole apartment is too bare, missing simple amenities like a wine bottle opener and wine glasses, so we had to go back out to find a shop that sold corkscrews. A fresh coat of paint is needed to cover dirt and scuff marks throughout. Cold showers for two of the four of us on the first morning.
All this being said, we would recommend the apartment solely based on location and bed comfort (bring earplugs if you have trouble sleeping - location is awesome). Hector was very quick to respond to our issues and was friendly and accommodating. The issues are cheap and easy to fix, but - PLEASE change the type of door lock to something that doesn't require internet to get in, label the door so we know we're at the right apartment, and print the house details for us for arrival. We're fine with quick showers if we know the hot water will run out. The trip ended fine and we're happy.