Great host, apartment & location; fair value--we were 9 people (including 3 kids & two 75 year olds) for 2 weeks in August.
HOST. Experienced host with a "real" daytime job. Experience means that Pedro has seen every puzzle or mistake any guest could come up with, and heads them off in his introduction, or notes. Because he has a job besides renting, he can invest in the property, and neither hovers over you nor fusses. Patient with explaining things a 2d time. He is careful to point you to the old-fashioned food market & the modern-efficient supermarkets for supplies, both 2 blocks away.
APARTMENT. If you've a NYC or Paris frame of reference, this resembles a fine Upper West Side or Haussmann building. High ceilings, tall windows-- thus well lit. Now has effective, modern double-pane sound insulation. Added air conditioning which blows into the central hallway onto which all bedrooms open--we never needed to cool the air, just use the fan, because Porto (like our native SF Bay) is not hot. Solid paster, good wood floors. Relatively child-proof (2 year old, 7 & 11). For N. Americans, an EU 1st floor equals our 3d--an advantage for light, air and privacy. (Groceries, baggage and stroller came up the charmingly antique elevator.) Reassuringly sturdy entrance & apt. doors. Very careful cleaning is provided at regular intervals.
LOCATION. We are good walkers (except the2 year old, who gets carried) and out the front door in 3 directions is lovely, low-rise old-style European city. We walked to all the tourist destinations via winding, picturesque streets, and if you can climb 800 feet, no problem getting back home via the stairs. (Funincular for those not so minded.) As advertised, Metro is great to and from the Airport, as well as further afield to a great beach town. Nearby train station w inexpensive trains to other historic cities. North of this building are boring modern buildings and old Porto is all three other directions. We're all competent cooks, and the kitchen was quite sufficient (but consider bringing 1 good chef's knife.)
We favor a "hub and spoke" form of touring, and one where different members can go back to the hub for a nap, or shower, during the day. This was perfect for 3 families doing that.
VALUE. This was not the cheapest, nor most expensive place available. It was fairly valued, and if you are staying for an extended time and commit early, that is efficient for you and the owner which can be reflected in the price.