I would strongly recommend staying at Karin's place. The setting is beautiful and there are a range of nice bars and restaurants close by. We went to Cafe Lennep, Pizza Project, Staring at Jacob and De Beer and they were all really good. There were many more we didn't get to try.
The tram system is really easy to navigate and is just a short walk from the accommodation (tram lines 1 and 17). We got a 48hr pass on the GVB app and it was worth having.