My friends and I thoroughly enjoyed our stay at Elena's apartment. It is clean and modern, 3 bathrooms, lots of seating in the common areas, and in a great location. Elena was quick to respond to texts and emails. The keyless entry to the building and apartment was a big plus for us as a large group, as there were no keys to worry about or share.
A few small things that could be improved: The dishwasher didn't get the dishes very clean and often we'd have to wash them again (perhaps the dishwasher needs to be serviced/cleaned) and the WiFi signal was intermittent and unreliable. This could perhaps be improved by adding a WiFi signal booster.
Overall, my friends and I were very happy with our stay at Elena's apartment. Highly recommended.