I feel bad to say it so plainly, but I wouldn't recommend staying here. The apartment is beautiful and Nico is super nice and responsive, but it is SO noisy in the apartment, because it's right next to a night club. I stayed for 4 weeks and felt like a crazy person because I couldn't get any sleep. The club plays loud music 5 nights a week (every night except Mondays and Tuesdays), from around 10pm until around 4 am, or on Fridays and Saturdays until almost 7am (no joke). I bought various earplugs and used a white noise app on my phone, but it is incredibly loud (and they turn the music up after 1 am). After the club closes, people hang out outside yelling and singing, and then at 8am construction on the building directly across the street starts. Sometimes when people would hang out below the window, I could smell cigarette smoke coming into the apartment (through the spaces in between the windows I think)...so that tells you how little insulation there is from the street noises. I would only recommend staying here if you are a VERY heavy sleeper, plan to party until late every night, or only plan to stay Monday and Tuesday nights.
About the location, it's in a busy/fun area. It's a little far from metro stations (a 15-minute walk in one direction and a 20-minute walk in the other).
About the comfort outside of the noise problem, the bed is firm but comfortable enough and the water pressure and heat in the shower are good. There's a combo ac/heater unit that works well. The door to the balcony is VERY heavy and kind of difficult to use, but it works.
To be fair to Nico, he did offer to let me move to another one of his listings for part of the time of my stay, but it wasn't convenient for me, because it was only available for the first part of my stay. Essentially, I would have to "move" all my stuff across town twice (after already moving/unpacking everything once), learn a different part of town, and pay an extra cleaning fee. The whole point of booking for 4 weeks was to not have to deal with all that.