We own a 2018 Hummingbird 17RB and have been happy with the unit for short excursions.
1. Very easy towing and maneuvering--backing up, parking, getting in/out gas stations, navigating town, competing through congested highway areas, traversing mountain passes--primarily due to the small size. We use a hitch with weight distribution bars and an anti-sway bar that are a snap to hookup/unhook. With those three in place, unless there are very high winds or the road is very rough, the unit is a breeze to tow with our Toyota Tundra. We towed this trailer with a Toyota Tacoma and the unit was more noticeable with the smaller truck, but still very manageable.
2. Set up is incredibly easy. Once the trailer is in place, the two of us working together can unhitch, level, get the stabilizer jacks down, connect electricity/water/sewer and have the A/C cooling the interior in less than 10 minutes.
3. While necessarily Spartan on interior space and amenities because of its compact size, it's all we've needed for up to 3-4 days at commercial campsites. The slide has been solid and fully functional 100% of the time. The A/C unit cools the interior quickly; the heater is a little slower but got the job done the one time we needed it. With the blinds up during the day, the unit is well-lit; the 11(!) interior electric lights are bright and turn on individually to allow customization when you need them. The refrigerator is decent size, but lacks a temperature adjustment--it's "factory set", and too cold (freezes stuff) unless it's packed full. The hot water heater is adequate in providing hot water to the sinks. The microwave has not failed to pop popcorn or re-heat leftovers. There is a surprising amount of storage space.
1. The bed is queen size, but (necessarily) the long side is along the width of the trailer. Which means if the person in the back needs to get up at night, they need to crawl over the person in front, or make them get up, too (pro tip: men 50+ -- don't sleep in the back...)
2. "RB" stands for "rear bath", and that location makes for great space around the toilet and sink. I'm 6'1" 235lbs and have no problems with the facilities.
The shower, however, is so small as to be utterly worthless. Jayco might consider a showerless version. There's an external shower for boondockers to rinse off in a bathing suit, making the shower wasted space in our view.
3. The two burner stove will barely boil water at low elevations. We bring a small gas grill and a small charcoal smoker when we travel with the camper and only minimally use the stove--we mostly put a cutting board over the grates to prepare food. The kitchen sink is only useful for rinsing off things as it is small and shallow. The entertainment speakers are terrible, but replaceable.
4. Ostensibly, the table and seating area fold to sleep a third person, but unless that "third person" is the family pet, we wouldn't recommend it.
Overall, for 3-4 days (which comprises 80%+ of our trips) and in commercial campsites (we haven't boondocked in the unit), we're happy. We've taken a couple of longer trips and the Spartan nature of a 17ft trailer begins to wear on us after day 3.