We stayed at Villa Rosa, lake view room with balcony, and had a fantastic week. Our room was spotlessly clean with a nice view, owners Patricia and Diego were welcoming and extremely helpful, with advice on local amenities, and buses, discount vouchers for ferries etc, along with local maps and leaflets. Shower was powerful, always hot water, lots of white towels and toiletries. Comfortable bed and lots of storage space, with a security safe. As the nights were hot, the air conditioning was fantastic.
The rate included breakfast, which was the best we have had, with cereals, fruit, nuts, yoghurt, pastries and cakes, and cold meat, cheese, eggs, bacon, toast and tea/coffee. Laura and Andrea looked after us extremely well at breakfast, always cheery and helpful, it was a lovely start to each day.
The location is ideal, on shuttle bus route to old town and castle (1 euro), but also very short walk to Columbare which had supermarket, cafes, and the bus stop to Verona. 20 minute walk to old Sirmione. Right across from the hotel (by the ice cream parlour) are a couple of lovely lakeside restaurants, and a grassy beach area with sunbed hire and watersports/swimming. Beware there are mosquitoes in the evening but that's inevitable by a lake in summer.
On the walk to the old town there are shops, grassy park areas and a great crazy golf course. There are beaches in Sirmione which looked good, loads of people in the water.
I have no hesitation in recommending this hotel.