In short, a great place, but caution if you're a picky sleeper.
Good:
location in a nice tourist/upscale neighborhood, close to the waterfront, 5 minute walk from Jaume I metro stop. Almost everything tourist is within a 40 minute walk. We did not hear any street noise (from 9pm onward)
Kitchen was well stocked with cookware, coffee machine is the nespresso cartridge type, gas stove is nice.
Bathroom was nice and clean. Water heater is the on-demand type, so hot water didn't run out.
Patio was nice and as described, included an outdoor shower. Didn't spend much time up there as it was cold.
Stairs are steep and winding, but we managed with 2 large backpacks. The check-in guy (who is not Thomas) helped us. Check-in guy was quite responsive and came early when our ferry arrived early.
Not so great:
The view from inside the the apartment is quite limited as all the windows are frosted. If its warm and you're able to spend time on the patio, it probably not as bothersome.
Beds are not comfortable for side sleepers, especially the bed inside the separate room. Both beds are firm and coil-spring mattresses.
The separate bedroom is also missing the external window shades like the open bedroom has, so when the neighbors leave their outside light on through the night, it seems like its morning.