Staying at Maria Luisa's place is like visiting your loveable Catalan aunt's vacation home. It was spacious, modern and a few decorations here and there showing her personal touch. We absolutely loved it! Maria Luisa herself met us at the apartment to give us the introductions, collect the city lodging tax and give us a wealth of info on the local offerings. The process was seamless and absolutely enjoyable.
There is an elevator on the premises, but we hardly used it since the apartment was on the 2nd floor. In fact, we only used it to help carry our luggage up and down the floors.
As for the location, it's true the apartment is extremely walkable to many of the major sites like Plaza Espana, The Arenas, National Museum of Catalan Art, The Magic Fountains, etc. For the rest you can easily take the train and the closest station is Taragon about 2 blocks or streets away, which is a 10 minute leisurely stroll from the apartment (25 if you stop for tapas).
The apartment itself was up to date, there is a washer (no dryer), dishwasher, 3 different kinds of coffee makers, a fridge, an oven, etc. Everything was there and as expected.
Really the only negative I can think of is the distance to the Taragon Station, which wasn't bad at all. Otherwise we absolutely enjoyed our stay here. For this trip we stayed in 3 Airbnb's and this was by far the most enjoyable.
Thanks, Maria Luisa!