Giardini is only 2 vaporetto stops from San Marco Piazza. However it is also a very pleasant and easy 15 minute walk from this monastery to the Piazza. Giardini is far enough away from the busy heart of Venice but close enough to enjoy everything.
My room in this monastery was large and had 2 ceiling to floor windows which over looked the international ships in port.
The breakfast that was included in the rate was one of the best breakfasts that we had at any of the monasteries. Also, there was easy access to internet and wifi.
In Giardini, the main street is lined on either side by many cafes, bars and restaurants. Eating out was very affordable with excellent choices. The atmosphere was charming particularly in the evenings. We dined most nights in the Giardini centre and paid approx. 10 euro for a great meal including wine.
Giardini has beautiful gardens which have been there since the Napoleonic era and now days have been the traditional venue for the International Art Exhibition since 1985.
Of course in Venice the local transport is the Vaporetto, which is the water bus. This is such a fun way to travel. I recommend that you buy a several – day or multi day pass as it makes it so easy to hop on and hop off the vaporetti as they run so often to each of the main islands.
The most cost effective way to get to the airport from Venice is on the water taxi If you are arriving or departing from Venice by train then it is very easy to take the vaporetto to or from the train station.
Please note also there are lovely B&Bs in Giardini which are also very affordable.