I highly recommend VV!
First, the property - I would liken VV to a boutique mini-hotel. The bottom floor is an office, and the next three floors are flats. The top floor is a shared kitchen, from which, you can access two balconies with incredible views. I stayed in the Gallery, which was the highest flat. I counted - there were ~50 stairs up to my flat. I had no plans of formally working out while on vacation, so this was a positive for me! This said, I would recommend the Library (the lowest flat) if stairs would be a challenge for you.
Beyond this, the space was just a pictured - very modern, and - being the highest flat - sea views out of all of the windows. There were several movies, CDs and books in the room - I had fun exploring some of these. Likewise, local snacks and beverages were provided upon checkin. I thoroughly enjoyed the hoist when I discovered it - I had no use for it, but it was a fun feature that I admittedly played with a few times!
There was a pamphlet in the room that described local attractions - this became my little Valletta bible. The flat is at the end of the main street, so all I had to do was walk ~5mins up the hill to be in the heart of Valletta and all attractions listed in the pamphlet.
Second, Denis, the host - he was extremely responsive! He arranged for transportation when I landed, and was at the property to meet me when I arrived. He carried my bag to the flat when I arrived, and I realized - as we were climbing the stairs - what a very kind gesture that was :) He was always available when I had little questions, and provided me with excellent recommendations. He again arranged transportation when I left (for 3:45AM...impressive).
Other tips:
- I did not rent a car but had no issues navigating by walking or taking the bus (station was ~10min walk up the hill from the flat). Being American, I'm glad I didn't, as even my taxi driver said the area was hard to navigate, as one-way roads suddenly flip direction at any given intersection, and parking is up/downhill and parallel. Also, most rental cars in the area are manual.
- Sunday - Tuesday are 'down times' in the winter, so note that some of the restaurants aren't open these days, and grocery shopping is limited. I highly recommend Taproom on these days - it is the highest rated restaurant on several apps and deservedly so!