Hi - there are very few of the yards either on the Fiumicino
Canal or the Tiber who readily answer to emails, or indeed the
phone. We didn't
lift out (wintering afloat in Ostia marina) but there is a wide range of options and yards. In the
canal you are further from Rome, and in the flightpath, but it is probably cheaper. In the river, many of the yards belong to private clubs, the north side of the river is miles from anywhere and not on bus routes. The south side may offer some very good deals with a bit of bargaining.
The best bet is to rock up (in either canal or to Ostia marina), allow yourself a few days afloat and ask around about space and cost. Take a good look at the lifting
gear used in any yard and be satisfied about both it and the props. It is possible to pay a lot of
money, or to find a good deal, but you need to get to the area and ask.