We've stayed in this place for 2.5 months and worked remotely from here (2 persons).
The internet speed is fast and the connection is stable. The reception in the 2 front bedrooms, kitchen and living is perfect. In the master bedroom the reception is not good and the connection sometimes drops.
The apartment has the things you need for every day life and you can comfortably cook. There is no A/C but there are plenty of fans.
Jesus was super friendly and helped us really well with some things that came up during our stay.
The neighbourhood is really nice, lots of bars and restaurants, not far to the metro. Walking distance to Turia.
The only downside with the apartment is the neighbours on the same floor. It's a shared student apartment and they put on music quite often and they do smoke mariuana every now and then. They are not extremely loud but because all the windows are open you do notice the noise/smell quite a bit on some days. Fortunately the noise is almost only during afternoon & evening and not the night.
Overall I would recommend this place, either for short stay or for longer stays.