The pod is really beautiful and cozy. It has all the basic you need while also having a wonderful scenery. Cristina was also a wonderful host to me.
The only thing though is that the pods are like 20 minutes walk from the actual address listed which at the night without lights and with watch dogs keeping barking at you like you're danger. On top of that, you have to take a bus to actually get to the main part of sintra or walk another 30 minutes. Which the bus system in sintra is not quite reliable depending on the time of the day it may just not show up.
With that in mind, I think this place is still worth it even with what I just said. It's probably best to be with someone else and also make sure to buy groceries before going to the place.
Note: The dogs that I'm talking about were not Cristina's. Hers were very cute and sweet.