Quiet and cozy apartment, very close to the city park, 10-minute walk to Belvedere, St. Stephen's Cathedral (Stephansplatz) and 5-7 minutes to Wien Mitte station. Nice Greek restaurant (full of locals) with big plates and low prices is almost the next door.
As for the apartment, it is modern, clean, freshly renovated, spacious, really warm, but not too hot. The apartment is well-equipped (safe box, hair dryer, dishwasher, conditioner), kettle and Nespresso coffee machine, so you can take your own capsules and have a nice fresh coffee every morning. The only strange thing is that there is no microwave, even a small one. Three of us stayed there for 3 nights and really liked the place. Communication with Celine was great, no problems at all. Thanks!