Very convenient place to stay near a tube/underground station which gives you a good connection to Schonbrunn and Stephans Dome/Cathedral. Actually if you like to walk and admire the surroundings then you can walk (a bit lengthy walk I have to say) to many of the tourist attractions.
Niko's place is great for single, couple or even three persons from what I saw.If you have friends already living in Vienna and don't want to stay in a restaurant or bar in the city you can invite them for a few drinks on the rooftop and relax especially in the summer . I really liked the swing there. Swinging and drinking a cold beverage.
Looking into things to find there. Whatever you have in your home you will find it as well at Niko's place.