Pina is so friendly. We stayed there 3 days with my 4 years old child. There is no problem for the stroller since there is an elevator. Small kitchen contains all the things (pan pot dishes fork etc.) that you need to cook for your child. Just walk 5-10 minutes from collesium to reach the apartment. Mini markets(water napkin fruit) are all around. A little walk is required in order to reach supermarket. Metro station is also 5 minutes by walking.