Honestly, the location could not be better and the flat was just perfect. I had a bit of a rocky start but I also booked very late. I was arriving early than the check in time and had some back and forth over text about how to get into the flat, and where to store my luggage. But honestly, when the concierge came over and got me checked in early with a bottle of wine and apologies, it was all forgotten. The flat is quite large with a great little kitchen, a very comfortable queen sized bed, a big clean bathroom and EXCELLENT water pressure, a super comfortable living room with air con, all of the locks were just pin codes so you didn't have to worry about losing keys, and just lovely touches like the stone walls and a lovely bookshelf and decorations. HATS is on the backside of the building so very nice and quite. There was a small elevator and the building felt SO safe. As a solo female traveler, it's one of the most important factors when I pick a location and it was at the very beginning of the most perfect walking street Rua das Flores. You walk outside the door and you're in the middle of 4 adorable cafes and restaurants, beautiful music from street musicians, tourists and shopping. The location was PERFECT. Every time I got lost walking around the twisty turny streets, I would always end back up on Rua Das Flores and the location could not be more perfect for a first time visitor to Porto. Check out was a breeze and I just left my luggage in the lockers on the 4th floor. My only recommendation is that they explain that they lockers may be full and it's only available if there is a key sticking out of the lock. One other small hiccup was that they tried to organize transport to the airport for 20 euros for me, but they driver somehow ended up meeting at airport instead of at the flat. They were apologetic and offered to refund the uber I took instead. Overall, excellent hospitality and EXCELLENT flat and location. Thank you for an excellent stay and I will certainly be back.