Don't rent from this agency! They are not only overpriced but also unpleasant and maybe even dangerous to stay at.
The biggest problem is the concierge service. You have three contact people (airbnb and two people who will write you via WhatsApp without your permission). We set checkin time at 2pm but they told us that they can't checkin early and set the time at 18:30. We had a trip that day and i had to communicate with three different people to arrange the checkin. Hopefully, the guy who was physically giving us the keys (Marco) agreed to do the check in at 9pm which was, apparently, outside of his working hours. Still, it was a great hussle (3 chats over few hours of my trip time) and by far the worst checkin process in my experience.
One day we had a trip to Sintra and when we arrived there by train, we didn't remember if we turned off the heater (it's quite cold there at night). It was our fault, obviously (even though in the end it appeared that it was off all the time), however we didn't get any help from the concierge service. When i asked them to send a person to check whether it was off (i also suggested to pay extra for that), they told that it's our responsibility and we will be liable for all the possible damages but they won't send a person. So we had to come back by the next train and we lost our trip to Sintra, including all the bookings we had that day. They also respond slowly and don't answer to calls. In case of emergency you won't be able to account on them.
The apartment was also much worse than expected. The biggest problems were:
Gas/fire boiler that goes off every few minutes. It means that when are having a shower, after a few minutes the water will become cold and you will have gas in the kitchen. Not sure how safe it is. Having a shower was very unpleasant. But i guess gas boiler is cheaper for them.
Bathroom smells. There is ventilation in the bathroom but it doesn't work when the light is off. So after every night the whole apartment smells of mold. Fridge was smelly too.
Toilet's flush was leaking.
Lights in the bedroom are fake. They are not plugged in and there are no power sockets for them!
Conditioner is loud. Once we turned it on after 10pm and a neighbour came to us asking to turn it off because the outside module was loud.
Overall, the experience was poor. By far the worst apartment i rented over airbnb.