As I agree with the comments of the other guests and as I prefer not to repeat what has been written numerous times, I would like to focus on some practical information. The quicker a traveler has found answers to practical issues, the quicker he can start spending his time on the goals of his trip.
So, at the end of the street (2min.) you'll find a little square were you'll see containers for garbage selection (only paper and not selected garbage can be left in garden belonging to the house), an ATM and a supermarket as well (at the opposite corner coming from your AirBnB). Another close-buy supermarket you'll find in the parallel street behind your temporary address. It's in fact located at the other side of the house garden.
If you go straight through the little park, you'll end up in a larger park (2-3 more min.) where you can take the metro to Karlsplatz (3 stations). The exit 'Oper', at the end of a long corridor (one level up), leads directly to the opera square. It's an alternative for changing lines.
And last but not least: if you appreciate cakes, try the heavenly 'Chocomousse Törtchen' in Café Mozart behind the opera! For all your other questions you can go next door to the excellent Tourist Office!
In the evening the quietness of the Margareten neighbourhood and your fellow inhabitants will enable you to recuperate well!
Enjoy your stay!