This place is very lovely, clean and in a very good location for a long weekend in Vienna. We had a great time, the flat has everything you might need, including salt, pepper, oil and toiletries, which makes your stay so much smoother and pleasant!
Merlinda is very communicative, however we did not need to contact much as everything was so simple and easy, most importantly the check in which is very straightforward.
Just as a note for others as I know this will be helpful for others looking at this apartment, if your flight home is late on the day of checkout, this apartment does charge a fee of €30 for you to store your luggage there throughout the day before heading home later that day. Our advice is to store your luggage in the lockers at the local train station, Wien Hauptbahnhof which is only a 10 minute walk. We had a few large rucksacks but most importantly a small suitcase which all fitted in one locker, for €2 for the entire day!