Miguel's apartment is very small, but it is very clean and comfortable. There are many shops nearby for groceries and the metro station is close. We used the kitchen frequently to have our morning coffee, make sandwiches etc. The neighborhood has many fun and varied restaurant options and great places to walk and enjoy views of the river and city. It's a great area for taking photos and getting a feel for the culture.
If walking up and downhill is difficult for you, then this apartment and neighborhood might be a challenge for a long stay. The unique steps into our apartment required a climb also. We are in our 60's and all was do-able, but we are active.
The neighborhood is safe and quiet. When going into busy tourist areas be hyper-aware of pickpockets. They are numerous and professional.