Chris offers an amazing place for a really good price. He is very nice and was not mad at all, even though we arrived later than we said we would. We also appreciated his small presents.
The only inconvenience we had was with the surroundings of the apartment - the rest of the building (outside of our apartment) was in quite a bad shape and there were some strange people as well. However, these people did not force any interaction with us.
To conclude, our stay was overall very pleasant and I would recommend this apartment to any couple looking to stay a few nights in Wien.