Great location and very clean. We enjoyed our stay with two kids. The place feels brand new. It's 3 blocks to the funicular (great view from the top), about 10 - 15 min walk to the Gughenheim over the river, 2 blocks to a playground. Kitchen is very small but functional. Several markets within 3 blocks. All windows face a small interior courtyard yet it still feels bright. First floor (second by US standards) so it was easy to take the stairs or elevator.
Neera met us at our arrival time. She was friendly and spoke English. She even had a few snack items for us.
I would recommend her flat.