The address is excellent, very close to Plaza Catalunya. Messaging with Andrei was easy.
Thermal comfort and sound insulation are great. However, the service was terrible. We stayed for 9 nights, but they only left one set of bath towels for each person, only one sheet on the bed. I asked to send extras, at first they didn't respond to this demand, then they promised to deliver it to me, but they didn't. I had to buy laundry soap to wash the towels.