cruisesafer

Oh no, I'm sorry... Then that's probably why it didn't seem  at all stretched! 🙂

We've been on the MSC orchestra (sister ship) in August and we did not feel like it was a stretched ship. We felt all was in great condition, spaces were appropriate for the amount of passengers. Before booking the cruise we were worried reading all the negative reviews, but we enjoyed the ship and the cruise very much. We have an upcoming cruise shortly on the MSC lirica in a few days and a we are very excited to try a smaller ship.

Time ago I read somewhere that they are much more expensive than conventional propulsion and have a limitation on how much power they can transmit to the propeller, so for big ships it is not ideal. Also they offer different maneuvering characteristics than traditional shaft plus propeller systems that are not ideal for very large ships.

I forgot to mention that the ship was the orchestra not the meraviglia

We took our 7 month old baby on our first Msc cruise and we loved the experience. Everyone was so nice and some of the crew members, including once the captain, stopped to chat with us and entertain the baby a bit.
In the restaurants they provide high chairs and in the cabin they are able to provide a baby crib. We had our travel crib so we did not need the bed, but the high chair was great to have during meal times.
There should be enough room on the bathroom sink to wash the bottles and leave them to dry. We used the desk drawers to store baby food, items and clothes. The desk was the most convenient place where to prepare the bottles because of the light from the window and light ion top  of the desk and mirror.
We washed baby clothes in the sink and hang them to dry in the shower clothes line.
I suggest you give the a measles MMR vaccine before boarding according to you pediatrician advise, which will be later repeated when your babu is 1 year old and wipe the surfaces before he touches them. We felt the higiene on board was good and surfaces were clean for her to touch them anyway. She was not walking and so it was easier to control that aspect anyways.
We did not leave our baby at the daycare because she was too little.
We carried her around the ship either holding her or on the stroller that double as car seat once detached from the frame (Chicco keyfit system) that we used for the excursions. 
At the bar they were able to quickly warm up the milk because we mixed it with bottle water that was too cold.
On board there was a small shop that sold some items, but I can't remember about baby items specifically. During our stops onnland we went a couple of times to get baby stuff like formula and diapers once.
Definitely a great experience on board and during the excursions. 

On our cruise cabin water was ok to drink, but there were several signs near the water dispensers in the buffet asking passengers not to fill their own bottle at the water dispenser to avoid spreading germs...

Water bottles at the bar were about 2 euros

The Msc cruise we took last summer had all times in local time. We crossed several time zones and it was always adjusted to match where we were. We got a notice in our cabin the night before and the TV channel with information had always the local time of where we were as well.

We stayed at the Lindner Hotel am Michel, we liked it very much. It's near the city center and 30 mins away from the Altona cruise terminal. 

Also weather is variable with mild temperatures and chance of rain or thunderstorms. Try looking at least year's temperatures and weather on one of the weather websites to have an idea. In Venice: lows 50s, highs high 60s with a few days of rain.

There should be at least 4 formal nights plus one white night where everyone is invited to dress in white clothes.