We were two people, staying for 5 nights in September 2017 during La Merce Festival.
Pros:
Wonderful views of course! The flat is accurately described and as photographed. Location is great. Two different Metro stations a couple of minutes away in either direction. A supermarket practically next door for supplies. Small bars and eateries downstairs should you want, although we always ventured further afield. It's a typical Exiample street, so was well lit and felt safe. For us, it was a perfect base for exploring Barcelona.
We had quick and detailed communication beforehand and Ricardo was waiting in the flat for us there to meet us at check in. We didn't have to contact him during our stay as everything went really smoothly.
To Consider:
The kitchen and bathroom are small. Perfectly functional for us but for those wanting to eat in a lot, this might prove tiresome. There was also only 1 bath towel each and 1 kitchen towel in the whole apartment, unless I couldn't find the others. That's perfectly possible as it took me a full 24hrs to see the wine glasses in the living room dresser!
The 2nd Bedroom is also not big ( as photographed) and the bed only just about fits a 6 footer like me. Any taller and you'll be better off on the couches, which are both long, wide and very comfy.
The flat is on the top floor (that's how you get those views) and the lift, although charming, might be a squeeze if you have one of those big modern prams.
But these are hardly negatives. Overall we had a great stay.
What are you waiting for? Go and see the views for yourself...