This place was great for the two of us, located 5 mins from both the Rialto bridge and San Marco, it was easy to get around to both within the city and when it was time to head out.
Nina met us at the boat stop to take us to the room, which was nice since the narrow streets can be confusing for new travelers. The apartment itself was a great place to stay for a few days while we explored. The sofa bed was pretty comfortable and Nina provided some bathroom toiletries. The apartment also had some amazing views of the Campanile and a nearby church, which was great!
As others have noted, the apartment is up several flights of stairs and may pose some difficulty to those who need more accessible accommodations. Additionally, the shower is best suitable for shorter people as the bathroom is under the sloping part of the roof. Both of these things Nina informed us about and we had full knowledge of prior to our stay and they were not issues for us.
Regardless, we had a wonderful time and would definitely recommend this place!