We stayed four nights in Rovinj and in the appartement Felicity. The appartement is very well equiped, espacially things you need for cooking, like spices etc., you have to bring by your own...maybe a role of toiletpaper, too ;) you have a lot of space to live in the appartement but - in our opinion - you can't feel free to live there because you find in every corner signs reminding you to be quite and prissy. Dudes, take care of your sourroundings, maybe the signs can be removed in a while.
To explore hire a bike but not by ELIM. The bikes arent save enough to drive along the coast. Rent it at the habour, same price, top quality.
Be aware when you arrive by care. There are only parkings lots you have to pay for (5kn/h). Sanja can tell you where to park for free, but its about 15minutes to walk. Think about what you need, because full packed its very stressful to walk the hilly way.
If the appartement is just for sleeping at night, we can recommend it. But if your a looking for a cozy place to stay (also on rainy days) you'll find another place to stay in the romantic old town.