This is a cute apartment near Martim Monez Metro. it's very conveniently located. I stayed there for 12 nights and always felt totally safe. (I'm a 75 year old woman who was solo traveling.) Apartment is on the 4th floor with no elevator, but not a problem. Grocery store nearby and many large squares nearby with restaurants.
Apartment had all the necessities a traveler would want. also had gear for an infant in the storage cupboard should that interest you. Great view out the window to historic monastery on the hill. very quiet at night. I heard nothing. I would highly recommend.