Check in at Daniels place is seamless. The apartment is very spacious and bright. The bed is comfortable. The tram stop is a 1 minute walk from the flat- very convenient. The kitchen is well equipped.
Our only negative experience was of a musty smell and no blinds or curtains in the hallway between bedroom and bathroom.
The flat description says you will be 15 minutes from the centre- this isn’t true. It is at least 25 by public transport.
Overall I would recommend Daniels place for exploring Vienna.