We really loved our time at this place. The location couldn't be better - close to transit, museums, parks, you name it! The parking and garage for our car was perfect. The spar grocery store right downstairs (open until 830) was really convenient and affordable. There is a great shopping street and a Starbucks just up the road.
The place had some great baby amenities like a stroller and high chair. There was a dishwasher, clothes washer with detergent and drying racks. The patio on the roof was amazing and had some great views. It was a well stocked kitchen and plenty of living space. I would stay here agin in a heartbeat!
The only issues we had were some communication difficulties the few days before arriving and getting into the apartment. People with kids, also be prepared because the stairs are a bit steep and can be slippery, and there is no baby gate.
You will not regret your time here, and Vienna is amazing. Enjoy!