The flat was lovely. Clean and tidy with everything you could need and it suited us as a family of four. Yes the bathroom is small but completely functional with consistently hot water. Charlotte's mum gave us a friendly welcome and we really appreciated the bottle of wine! The flat is in a perfect location near the lakes, Kastellet and the little mermaid. It's a 30 min walk to Nyhaven and Osterport station (10 min walk) has a direct line to the airport and Roskilde. If you have kids the Zoology museum at the University is worth a visit (20 min walk). Overall we really enjoyed our stay in Copenhagen and in Charlotte's flat.