Read over the Stickies at top of first page in this forum. There are a least five requests for advice on buying new or used rigs per week. Most of these threads warn buyers not to buy anything with water damage, be wary of very low or very high mileage rigs, make sure everything works properly and get independant estimates for repairs/upgrades needed befor buying. 27-28 foot rigs have RV queen size beds normally with access on one side. Shorter rigs have less comfortable sleeping in the overhead or convertible sofas or dinettes.
If buyer is not equipped and skilled in auto mechanics, RV electrical, plumbing and RV body works he should buy a 3-5 year old rig or new rig that needs nothing. All rigs are trucks full of appliances and need basic maintenance by the owner and professional repairs and installations over time.
We have a 2004 Fleetwood Tioga 26Q similar to Ichabod's, no slides, not "needed" for two, but nice when they don't leak and extend/retract properly. This is a short a rig as I'd recommend mostly for the rear bed/bedroom, no climbing up and down ladders. Most rigs with rear bedrooms also have overhead beds for kids and small convertible dinette beds.