I agree with most of the comments already written. Checkin is very impersonal but works. Unfortunately you won’t receive the final details until 3 hours before check in so unless you have mobile data you’ll have to go somewhere to get wifi to get the directions and check in info. It’s a bit strange not having a contact person to write to.
Travelling as a single female, I felt very safe in the apartment.
Amazing central location for sight seeing (incredible actually!) but very loud in the evenings. I had a group of guys drinking beer, laughing and carrying on from who woke me up from 2-5am. I asked security if he could request them to move but he shrugged his shoulders and said it’s a tourist zone so he has no power. Didn’t sleep much that night but otherwise it was fine. The bed is at best, a double bed, not queen. It’s comfortable but a bit small for two people if you are used to a queen.
The apartment is well decked out as a self service apartment so provides most amenities but no coffee/tea/milk etc. For the price I would say this might be expected. Other reviews said there was no toilet paper but I had toilet paper, shampoo, conditioner and body wash. It was good quality.
The balcony is small but lovely and it was delightful to wake up to the square each morning (note it’s Restauradores Square, not Rossio Square).
There are so many amazing restaurants around the square. My favourite was Pinoquio seafood restaurant. There’s also a small corner store which sells baked items and coffee from 7.30am which is helpful for early starts. Starbucks is just around the corner too.
A few pros and a few cons but I did enjoy my time at the apartment.