The apartment is as lovely as the picture. Very modern and perfect size for a 2-3 people. It comes with full kitchen, which makes for cooking on a day you want to save money; would've been nice to have a few essentials like salt or sugar in the cabinets but definitely not a big deal. Seriously, the place is all you can ask for.
The surrounding area seems to get a little noisy in the later hours, but we did stay Friday-Sunday. And like a few others mentioned the hallway reeks of cigarette smoke, but the scent doesn't travel into the apartment by any means.
We walked to the center everyday and I will say it's not the fastest walk ... about 15-20 mins walk if you are leisurely strolling.
And lastly, Maria is very nice and very sweet. You can tell she takes pride in making sure her guest feel at home, because the apartment feels like a home. My only gripe is communication with her was often a bit delayed or absent (i.e. sometimes taking 24-48 hours to get a response).