Alvina is a great host. If you need anything, she or her husband will fix it. The apartment is true to the pictures. The apartment is great for young people who like to walk. It is in an old building where mostly 20 something people live. It doesn't have air condition, so it gets hot in the summer, even with the portable A/C. I loved the small terrace, but the terrace door is heavy and it was a challange closing it. The WiFi is portable, which is different from what I am used to. (I am clearly not in my 20's :-D)
Most landmarks and sights in the 1st district are within 20 to 25 minutes walking distance, which is close to the amount of time the tripe take with bus/ tram with the waiting time. There are two U-Bahn (the fastest mode of transportation) stations within a 10 minutes walking distance, if you want to visit places outside the 1st and 2nd district.