Yolanda's place was everything described and more. Perfect location right by the river and close to the metro and buses. The old town, Casco Viejo, is only a 10-15 walk away, as is the Guggenheim. The room was big and bright and comfortable with an en-suite bathroom. It's on the 4th floor but there is an elevator.
You get access to the kitchen, and she even provided snacks and breakfast. Yolanda herself was extremely helpful with suggestions, and very friendly. She walked with me to thebus station to make sure I found it with no trouble. All in all, a great stay!