One of the best apartments we've stayed in in Porto.
Great sound isolation (we've stayed in apartments where the walls were paper thin and you could have hear everything from the street and the neighbors - it is definitely not the case here).
Good, central location.
Swimming pool is shared, but not overcrowded. Decent size (you can relax and even swim a little if you're motivated).
Not heated, but it wasn't a problem for us. The swimming pool area is in the sun pretty much the whole day (from around 9:00 until 19:30, in June).
Cosmetics (shower gel, shampoo, lotion) are provided.
Late check-in (around midnight) - no problem there.
We checked out around 11:00, but left our luggage at the apartment for couple of hours which was very handy.
Claudia stays on top of things and the communication is great (like an answer within a minute great).
Can recommend and would stay again!