We stayed at Werner's place for 3 nights and we had a great time. Easy to reach from the main train station, just 5min ride by U1, 5min walk to the apartment. Our kids (6 and 8y) appreciated the playground close to the metro station.
The apartment was clean, cosy, just a perfect place for crushing in after a long day exploring the city.
Werner was a great host; friedly, flexible, easy to reach.