There is another building here, small and very close to the other 2, you can find it on satelit pictures

via StreetComplete 61.1

In context of overlay "Addresses" – Bl. A4 (Apartment Building) – way/35308569 via StreetComplete 61.0:

These are actually 2 buildings, next to each other with about half a meter between, the smaller one has the same address as the bigger one, but the number is 4a, while the bigger one is just 4 (i am their neighbour and in i have friends in both buildings)

Unable to answer "What’s the name of this street?" – Residential Road – way/472883578 via StreetComplete 61.0:

Too small to be a street, it's located between Valea lui Mihai Street and Valea Calugareasca Street