Mercedes flat is clean, warm comfortable and really quiet with everything you need for a stay in Bilbao. The location is perfect to explore the old town. The walk along the river to the funicular and Guggenheim is also really lovely. The weather was good so we walked everywhere so didn't use the extensive public transport system - bus, tram and underground. Mercedes met us at check in and gave us lots of really helpful information about what to do and recommendations for great bars and restaurants. A great host and a really comfortable flat.