We stayed at Ray and Armine's for 2 nights on during our first visit to Vienna. The location was quite close to main attractions and metro/tram lines, although we ended up using Uber to get some of the further away sights (very reasonable.) The neighbourhood was fairly quiet, but being on the first floor with the windows open you could definitely hear people and cars throughout the night so I would suggest some earplugs in the summer :) The kitchen was small but had all of the necessities (we were able to cook quite a bit here!). Diana was very flexible for check-in (we got stuck in traffic and kept having to delay) and gave us great suggestions for cheap parking and fun things to do in the city. Overall, we had a nice stay and would recommend!