Mixed reviews on food quality, with some praising it as delicious while others reported it as subpar or poorly prepared.
Service
Service quality varies; many customers appreciate the friendly staff, but there are numerous complaints about slow service and inattentiveness.
Cleanliness
Concerns about cleanliness, particularly in the bathrooms and dining area, were noted by several customers.
Atmosphere
The diner has a cozy and welcoming atmosphere, but some customers mentioned issues with the overall ambiance and upkeep.
AM
Al Martinovic
Dec 20, 2025
5.0
Looks like it's under new management. Was king arms diner now it's sunny side. Even though the outside sign still says king arms as of 12/20/25. Food was good. Typical diner fare
RN
Rin Nadolny
Dec 8, 2025
5.0
Sunny Side Diner is such a great local spot! The staff is friendly, welcoming, and always on top of things. The food comes out fresh, hot, and exactly how you want it classic diner comfort done right. The place is clean, cozy, and perfect for breakfast or a quick bite any time of day. One of my go-to spots in Middletown! Highly recommend.
RH
Rick Heming
Dec 5, 2025
2.0
Recurring mediocre service. Ordered a skillet breakfast, got eggs and corned beef hash on a plate. Server said “sometimes they just do it that way”. Also got while toast despite asking for rye.
II
Ike
Dec 1, 2025
3.0
I have mixed feelings about this place - times have been good - times have been bad. Theres always a brunette waitress that serves us on the weekends and there's always some sort of excuse or issue. I only really go here because it's close to where I live, food is good though.