Luis's apartment is a good base for people looking to explore Porto. The location is really close to main attractions like the Bolhão market, Cafe Majestic, and more on the East side. It's also fairly walkable to the other parts of the city as well.
Inside the apartment, the layout is minimal but still enough room to live comfortably if you don't mind climbing the ladder to the loft bed. When we stayed, the apartment didn't seemed maintained very well. Opening the dishwasher, the cabinet door fell off in my hand, the record player that looked so appealing didn't actually work, and the shower head seemed to be held up with a hair tie to prevent it form sliding down. In addition, there seemed to be a good deal of small flies in the kitchen and bathroom for some reason. Small things that were fine to live with but add up.
Aside from those things, Luis had some nice touches with some basic kitchen supplies and fresh fruit which was a great fro snacking in between the excellent Porto meals.