I can say without exaggerating that Isabel was the best airbnb host I've ever had. She was extremely kind and friendly, and she went above and beyond to help me out with several things during my stay: taking delivery of a package, coming and finding me when the taxi driver dropped me off at the wrong place, and even helping me get food delivered.
The flat is in a lovely old part of town, but it's totally remodeled and modern and comfortable. It's a great location--right on the tram lines and easy to get to the sights, but far enough away from the tourist parts of town that you feel like you're getting a feel for real life in the city.
The only problem I had was that the streets are very, very steep around the flat, and can be slick in the rain. I had knee surgery a few months ago and found they were a little too steep for me to handle, so that's something to consider if you have any difficulty walking.