Stayed for a week and worked remotely. Would highly recommend, the apartment is in a great location only 15 min bike from the beach and well connected with public transportation. The surrounding area is full of hip restaurants, shops, and bars. The wifi was quite good with ~20mbps up and down so fine for calls.
There are two other rooms rented on AirBnb so check Néstor's profile for those. The other larger bedroom comes with a private bath and though sharing was no issue I can imagine some people prefer that (though no view). The flat has a elevator so it's easy to get bags up to and it's generally large, airy, and beautiful. The rooms all come with a fridge which was really helpful for keeping a few snacks and leftovers.
Néstor (as many have noted in their reviews) is a great host and really reminds me of when I first started using AirBnb almost a decade ago -- people were opening their homes and lives to others and sharing their hospitality. That is Néstor and it's refreshing to find a listing with such a great host. Very special spot -- you won't regret.
My booking was very last min and Néstor is very quick with communication. His English is better than he would tell you and Google Translate made things easy.