I would highly recommend staying at Ida's, the pictures do not do it justice at all!
Ida herself is incredibly helpful, even waiting in until we arrived and then letting us store our bags until our later flight home, and was on hand to answer any of our questions both before and during our stay.
The flat is in a quiet, residential area so sleep is no problem, but it's also only a 5 minute walk to a really lively area with lots of really good bars, cafes and restaurants.