I would highly recommend Luisa's place. The location is good with a nice view of the river and about 20 minutes walk into the centre. The trams and trains are very close, so it is really easy to get around the city. The space itself is perfect, really homely and had everything we needed. Luis left lots of lovely touches, such as chocolates on the pillow, Nespresso coffee and fresh fruit. Overall, a great place to stay in Vienna.