Really good base for everywhere you may want to go to in the city. It is at a top of two hills - one outside (lots of steps up from Martim Moniz metro, easier but a bit longer from Rossi metro, and one inside - 3 flights of stairs. But it works well and is definitely worth it as the flat is perfect for a few nights stay. The arrangement to collect the keys works really well, like having your own concierge! Thoroughly recommended.