The apartment is gorgeously located. It's huge, spacey, centrally-located and extremely well-connected to metro and sights.
The check-in with the local contact person was great. He was extremely helpful. Also the concierge was very friendly and getting out of his way for helping us.
Minor troubles we faced were met with courteous and quick.
In few parts, the apartment could use a bit of refurbishing, but those are really minor aspects.