ABAI apartments are a good place for a person or friends who are travelling together and trying to save some money on accommodation. It is what you pay for- a bed, shower and a kitchen :) There is not much room in the multiple bed rooms, so be prepared for that.
It is very close to means of transport - Johnstrasse U-bahn etc and also walkable distance from the Schönbrünn castle, which is just a lovely stroll on its' own.
The most important to know is that the host is very responsive and helps you out whenever you have any issues.