The location of this property is fantastic. We were a family of 4, including a 16 and 18 yr old. The apartment is on two floors - entry level has kitchen, living area and bathroom, with shower and washing machine. The second level has 3 bedrooms. The kitchen was well stocked and had everything we needed to prepare breakfast and light lunch. We ate out for dinner as there are so many wonderful options close by.
Piran does not allow visitors to drive/park in the city, however we were able to drive in and unload our bags. Roman met us by the post office and helped direct us to parking near the apartment, so we were able to unload our bags quickly.
The staircase in the apartment is shared with Roman and his wife, but I only saw them once. All the doors lock, so when we were away, we did lock up the bedrooms.
I recommend this property and would stay here again. My only concern would be if you are older and need the bathroom at night, you do need to navigate the stairs. I thought this could be difficult for an older person.