Risking staying at a 4 Star hotel?😖

C • 🦄 ✨Your average 19 year old princess✨🦄
My boyfriend and I are planning holidays for the rest of the year, Maldives, Japan and also a close-to-home holiday, in Italy. Meaning it isn't a super long flight like our other two destinations. 
In Maldives we are staying at a Per Aquum resort with a gorgeous villa, in Japan we down scaled and opted for the Aman hotel's suites, to really appreciate the cityscape of Tokyo.
Issue now is - I found a great hotel, Hotel Eight in Portofino. It's 4 stars, but looks really decent, especially if it's just for a short simple holiday for less than a week. 
Should I risk it? Has anyone stayed here? Does dropping one star make a huge difference? I've heard horror stories from friends about European 3-star hotels, so I'm just a bit cautious. 
If anyone has been here - please share your experience!