We had a great stay at Tiago and Pedro's place.
It's so central, you can walk everywhere and there are loads of places to eat just minutes away. It is the nightlife area and there are several restaurants right outside that are noisy until the early hours. You can't hear it with the windows closed but it was quite humid and we needed the windows open all night to sleep comfortably.
Everything was very clean, the bed was very comfortable although the duvet was rather heavy for the temp. The living room area is spacious and airy, it the only space with natural light. The bathroom is a bit snug and we could smell the drains but you can smell the drains all over the city, I don't think there's much they can do.
We only stayed for 3 nights so didn't use the kitchen much. We found the fridge didn't get very cold.
Communication was a bit slow through the app. Once we got there and WhatsApp'd they were much faster at replying. Pedro sorted a 4.30am airport taxi for us and even called to make sure it had arrived which was so helpful.
I would definitely recommend for a young couple who want good value for money.