We arrived early in the day (before check in allowed), but our hosts met us (helped to find the entrance) while cleaning was going on. The allowed us to store our luggage in the apartment, gave us the keys, and we were off to explore. The location was close to the main square in the city and also to transit stops, and there was a 24-hour convenience store within 5 minutes. It also has a beautiful view and balcony.
The apartment is large, well maintained, and clean. It is clear that the owners love the apartment and care for it very well. It has a huge kitchen with nice espresso machine, dishwasher, and all of the utensils and plates we could want. Also had a washing machine in the second bathroom.
We had a car for the first day. Parking was not easy for us (weekdays during the day business people take most of the street parking) and I found that people drove rather fast, so was happy to be on foot the rest of the stay.
Our hosts were very responsive to any questions, and helped us with directions / recommendations on how and when to get to stations and airport for our departure. Also, before our trip, communications were very quick and good about directions and payments - it made me confident that when we showed up all would go smoothly, and it did. The only glitch we had was that I needed to re-boot the WIFI router, but all worked well after that.
If we return to Bucharest, we would stay here and would recommend it to anyone (who needs the space/number of bedrooms)..