The checking was very easy, we got the instructions the day before arriving.
The location of the apartment is also great, located right near a tram station around 20 mins walking from the city centre (keep in mind that Vilanova de Gaia is located on the other side of the bridge).
The flat itself is good, the size of the rooms, the size of the bathroom and so on, a very nice view from the balcony.
Unfortunately, the apartment wasn't as clean as we expected or at least, what we saw in other Airbnb apartments (I've been already in 4 different apartments within Porto).
The sofa is actually not as big as the one you see in the pictures, it's way smaller and as I mentioned it wasn't cleaned prior to our arrival.
The same applies to the main bathroom also had black silicon which it felt wasn't clean or at least it gave the feeling that it has mould, but the private bathroom that was inside the bedroom was really clean tho).
Overall, the communication with Telmo wasn't bad but as I said, we did expect to have a fully clean apartment before arriving as we experienced in other places.
In the end, we decided to move out of the apartment, after the first night as we were not comfortable there.