166 Waterloo Ave is a beautifully updated 4-bdrm red brick century home that blends timeless charm W/modern comfort in one of Guelph’s most desirable central locations! You’re welcomed by charming enclosed sunroom—inviting space to enjoy your morning coffee while keeping coats & shoes neatly tucked away. Inside glass-panelled French doors open to bright living & dining space where high ceilings, rich hardwood floors & oversized windows fill the home W/natural light. Kitchen has been thoughtfully updated W/white cabinetry, backsplash, S/S appliances & leathered granite countertops. Upstairs, solid wood stairs lead to 3 spacious bdrms each W/hardwood floors & large windows. The main bathroom is well-appointed W/sleek quartz vanity & tiled shower/tub. Large W/I closet offers the potential to be converted into an ensuite W/plumbing already behind the wall. Upper loft level adds incredible flexibility W/2 areas that can be used as 4th bdrm, home office, playroom or secondary living space, perfect for growing families & guests. Finished bsmt extends the living space W/large rec room & gas stove that creates a warm & inviting atmosphere. With separate side entrance & full bathroom this level offers excellent potential for an in-law suite or income opportunity. Step outside to private backyard W/deck, perennial gardens & mature trees—ideal for relaxing, entertaining or enjoying quiet evenings. Detached garage along W/ample driveway parking adds everyday convenience. Home has been well maintained W/key updates: windows 2010 & 2017, plumbing & sewer line 2015, 100amp electrical 2015, roof 2021 W/20yr warranty, water softener 2017, hot water tank 2022 & deck 2015. Around the corner from Royal Recreation Trail along the river & only a short walk to downtown, you’ll enjoy access to restaurants, boutiques, nightlife, entertainment, GO Station as well as nearby parks & schools. Rare opportunity to own a character-filled home W/modern updates, income potential & unbeatable location