It's an okay apartment. Looks better on the pictures than in reality and in general is quite bare bones. Small things like not having an extra garbage bag didn't make it pleasant, and many of the light fixtures were broken or not working. Great location in central Lisbon though so if you don't mind doing the additional prep it's a good space for a larger group.
It's also in a wooden building with a lot of street noise, although it's tucked away, so be aware of the noise levels at night as well.
I also got an 8.15am wake up call from someone from the gas company asking for the gas meter and being quite insistent about it, and of course I couldn't get through to the host and never received a reply when I texted this.
So overall, nice location, roomy apartment, but there are definitely better value-for-money/ nicer experiences you can stay at.