My stay at the Mercure Biedermeier Wien was merely okay, and I wouldn't choose to return.
On the positive side, the rooms and building were clean, with fluffy towels. I appreciated the in-room amenities: kettle with Nescafé, fridge, large safe, and free, reliable Wi-Fi. The female receptionist was friendly, and staff hardworking. Free lemon water and a welcome chocolate were nice touches. The hotel's a beautifully restored historic building in a quiet, central spot, near shops and Bahnhof Mitte. I also liked the restaurant's outdoor terrace and used the free gym and clean sauna. Parcel reception was also helpful.
Key Issues:
Several issues detracted significantly from my experience. Slow pre-arrival communication via Expedia chat was frustrating. At check-in, a missing parcel caused a delay until it was found right next to the receptionist.
The biggest problem was the broken air-conditioning in my initial room during a heatwave. A provided fan was useless. After a heated argument, including a dismissive comment about Spain's heat, I got a new room. Its AC barely cooled, just enough for sleeping.
Noise was a constant issue. Despite double-glazing, I heard street noise. More disruptive were daily 6 AM wake-ups from corridor noise (vibrating the bed) and noisy children above, making restful sleep impossible even with earplugs.
Finally, both rooms showed neglect: detached carpets, wall damage (hole, crack), and a leaky shower. Lift flooring was worn, and corridor art hung crooked