Stylish place right in the center of Porto in a beautiful plaza.
It is manage by a concierge company, so it has good and bad things.
Good: very clean with a touch of hotel feeling (towels rolled in the bed). Easy to check in (no keys).
Bad: limited amenities (lack of kitchen basic stuff to survive with kids such as sponge , kitchen paper , hand soap). It is set/up to use very basic things of the kitchen, like an hotel , so less feeling of a home.
All in all very recommended, but you know what to expect.