I was there with my girlfriend for four nights and we had a lovely time. The flat is, as it's name says, really cozy and the decoration also superb. We had everything we needed and we could have some really good rest, since the mattress and the bedroom were absolutely comfortable.
One thing that gave us some small trouble is that the space between the toilet and the wall and the bathtub was a bit narrow. From outside the building looks a bit old and the stairs and hallway a bit dirty but the flat was super clean ;). Bus Stations were super close as well as a big supermarket, where you could buy anything you may need. There is also some food already in the flat in case you arrive super hungry. The Harbour is right next to it and you can also walk to see the Royal Yatch Britannia.
Nancy is super nice and helpful. I recommend 100%